Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * ipmi_si.c |
| 3 | * |
| 4 | * The interface to the IPMI driver for the system interfaces (KCS, SMIC, |
| 5 | * BT). |
| 6 | * |
| 7 | * Author: MontaVista Software, Inc. |
| 8 | * Corey Minyard <minyard@mvista.com> |
| 9 | * source@mvista.com |
| 10 | * |
| 11 | * Copyright 2002 MontaVista Software Inc. |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 12 | * Copyright 2006 IBM Corp., Christian Krafft <krafft@de.ibm.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
| 14 | * This program is free software; you can redistribute it and/or modify it |
| 15 | * under the terms of the GNU General Public License as published by the |
| 16 | * Free Software Foundation; either version 2 of the License, or (at your |
| 17 | * option) any later version. |
| 18 | * |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 21 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 22 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 23 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 24 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
| 25 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
| 26 | * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| 27 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 28 | * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 29 | * USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 30 | * |
| 31 | * You should have received a copy of the GNU General Public License along |
| 32 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 33 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * This file holds the "policy" for the interface to the SMI state |
| 38 | * machine. It does the configuration, handles timers and interrupts, |
| 39 | * and drives the real SMI state machine. |
| 40 | */ |
| 41 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 42 | #include <linux/module.h> |
| 43 | #include <linux/moduleparam.h> |
| 44 | #include <asm/system.h> |
| 45 | #include <linux/sched.h> |
| 46 | #include <linux/timer.h> |
| 47 | #include <linux/errno.h> |
| 48 | #include <linux/spinlock.h> |
| 49 | #include <linux/slab.h> |
| 50 | #include <linux/delay.h> |
| 51 | #include <linux/list.h> |
| 52 | #include <linux/pci.h> |
| 53 | #include <linux/ioport.h> |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 54 | #include <linux/notifier.h> |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 55 | #include <linux/mutex.h> |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 56 | #include <linux/kthread.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 57 | #include <asm/irq.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | #include <linux/interrupt.h> |
| 59 | #include <linux/rcupdate.h> |
| 60 | #include <linux/ipmi_smi.h> |
| 61 | #include <asm/io.h> |
| 62 | #include "ipmi_si_sm.h" |
| 63 | #include <linux/init.h> |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 64 | #include <linux/dmi.h> |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 65 | #include <linux/string.h> |
| 66 | #include <linux/ctype.h> |
| 67 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 68 | #ifdef CONFIG_PPC_OF |
Stephen Rothwell | 11c675c | 2008-05-23 16:22:42 +1000 | [diff] [blame] | 69 | #include <linux/of_device.h> |
| 70 | #include <linux/of_platform.h> |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 71 | #endif |
| 72 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 73 | #define PFX "ipmi_si: " |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 74 | |
| 75 | /* Measure times between events in the driver. */ |
| 76 | #undef DEBUG_TIMING |
| 77 | |
| 78 | /* Call every 10 ms. */ |
| 79 | #define SI_TIMEOUT_TIME_USEC 10000 |
| 80 | #define SI_USEC_PER_JIFFY (1000000/HZ) |
| 81 | #define SI_TIMEOUT_JIFFIES (SI_TIMEOUT_TIME_USEC/SI_USEC_PER_JIFFY) |
| 82 | #define SI_SHORT_TIMEOUT_USEC 250 /* .25ms when the SM request a |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 83 | short timeout */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 84 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 85 | /* Bit for BMC global enables. */ |
| 86 | #define IPMI_BMC_RCV_MSG_INTR 0x01 |
| 87 | #define IPMI_BMC_EVT_MSG_INTR 0x02 |
| 88 | #define IPMI_BMC_EVT_MSG_BUFF 0x04 |
| 89 | #define IPMI_BMC_SYS_LOG 0x08 |
| 90 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | enum si_intf_state { |
| 92 | SI_NORMAL, |
| 93 | SI_GETTING_FLAGS, |
| 94 | SI_GETTING_EVENTS, |
| 95 | SI_CLEARING_FLAGS, |
| 96 | SI_CLEARING_FLAGS_THEN_SET_IRQ, |
| 97 | SI_GETTING_MESSAGES, |
| 98 | SI_ENABLE_INTERRUPTS1, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 99 | SI_ENABLE_INTERRUPTS2, |
| 100 | SI_DISABLE_INTERRUPTS1, |
| 101 | SI_DISABLE_INTERRUPTS2 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | /* FIXME - add watchdog stuff. */ |
| 103 | }; |
| 104 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 105 | /* Some BT-specific defines we need here. */ |
| 106 | #define IPMI_BT_INTMASK_REG 2 |
| 107 | #define IPMI_BT_INTMASK_CLEAR_IRQ_BIT 2 |
| 108 | #define IPMI_BT_INTMASK_ENABLE_IRQ_BIT 1 |
| 109 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 110 | enum si_type { |
| 111 | SI_KCS, SI_SMIC, SI_BT |
| 112 | }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 113 | static char *si_to_str[] = { "kcs", "smic", "bt" }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 115 | #define DEVICE_NAME "ipmi_si" |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 116 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 117 | static struct device_driver ipmi_driver = { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 118 | .name = DEVICE_NAME, |
| 119 | .bus = &platform_bus_type |
| 120 | }; |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 121 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 122 | |
| 123 | /* |
| 124 | * Indexes into stats[] in smi_info below. |
| 125 | */ |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 126 | enum si_stat_indexes { |
| 127 | /* |
| 128 | * Number of times the driver requested a timer while an operation |
| 129 | * was in progress. |
| 130 | */ |
| 131 | SI_STAT_short_timeouts = 0, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 132 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 133 | /* |
| 134 | * Number of times the driver requested a timer while nothing was in |
| 135 | * progress. |
| 136 | */ |
| 137 | SI_STAT_long_timeouts, |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 138 | |
Corey Minyard | ba8ff1c | 2008-04-29 01:01:08 -0700 | [diff] [blame] | 139 | /* Number of times the interface was idle while being polled. */ |
| 140 | SI_STAT_idles, |
| 141 | |
| 142 | /* Number of interrupts the driver handled. */ |
| 143 | SI_STAT_interrupts, |
| 144 | |
| 145 | /* Number of time the driver got an ATTN from the hardware. */ |
| 146 | SI_STAT_attentions, |
| 147 | |
| 148 | /* Number of times the driver requested flags from the hardware. */ |
| 149 | SI_STAT_flag_fetches, |
| 150 | |
| 151 | /* Number of times the hardware didn't follow the state machine. */ |
| 152 | SI_STAT_hosed_count, |
| 153 | |
| 154 | /* Number of completed messages. */ |
| 155 | SI_STAT_complete_transactions, |
| 156 | |
| 157 | /* Number of IPMI events received from the hardware. */ |
| 158 | SI_STAT_events, |
| 159 | |
| 160 | /* Number of watchdog pretimeouts. */ |
| 161 | SI_STAT_watchdog_pretimeouts, |
| 162 | |
| 163 | /* Number of asyncronous messages received. */ |
| 164 | SI_STAT_incoming_messages, |
| 165 | |
| 166 | |
| 167 | /* This *must* remain last, add new values above this. */ |
| 168 | SI_NUM_STATS |
| 169 | }; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 170 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 171 | struct smi_info { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 172 | int intf_num; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | ipmi_smi_t intf; |
| 174 | struct si_sm_data *si_sm; |
| 175 | struct si_sm_handlers *handlers; |
| 176 | enum si_type si_type; |
| 177 | spinlock_t si_lock; |
| 178 | spinlock_t msg_lock; |
| 179 | struct list_head xmit_msgs; |
| 180 | struct list_head hp_xmit_msgs; |
| 181 | struct ipmi_smi_msg *curr_msg; |
| 182 | enum si_intf_state si_state; |
| 183 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 184 | /* |
| 185 | * Used to handle the various types of I/O that can occur with |
| 186 | * IPMI |
| 187 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 188 | struct si_sm_io io; |
| 189 | int (*io_setup)(struct smi_info *info); |
| 190 | void (*io_cleanup)(struct smi_info *info); |
| 191 | int (*irq_setup)(struct smi_info *info); |
| 192 | void (*irq_cleanup)(struct smi_info *info); |
| 193 | unsigned int io_size; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 194 | char *addr_source; /* ACPI, PCI, SMBIOS, hardcode, default. */ |
| 195 | void (*addr_source_cleanup)(struct smi_info *info); |
| 196 | void *addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 197 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 198 | /* |
| 199 | * Per-OEM handler, called from handle_flags(). Returns 1 |
| 200 | * when handle_flags() needs to be re-run or 0 indicating it |
| 201 | * set si_state itself. |
| 202 | */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 203 | int (*oem_data_avail_handler)(struct smi_info *smi_info); |
| 204 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 205 | /* |
| 206 | * Flags from the last GET_MSG_FLAGS command, used when an ATTN |
| 207 | * is set to hold the flags until we are done handling everything |
| 208 | * from the flags. |
| 209 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | #define RECEIVE_MSG_AVAIL 0x01 |
| 211 | #define EVENT_MSG_BUFFER_FULL 0x02 |
| 212 | #define WDT_PRE_TIMEOUT_INT 0x08 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 213 | #define OEM0_DATA_AVAIL 0x20 |
| 214 | #define OEM1_DATA_AVAIL 0x40 |
| 215 | #define OEM2_DATA_AVAIL 0x80 |
| 216 | #define OEM_DATA_AVAIL (OEM0_DATA_AVAIL | \ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 217 | OEM1_DATA_AVAIL | \ |
| 218 | OEM2_DATA_AVAIL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | unsigned char msg_flags; |
| 220 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 221 | /* |
| 222 | * If set to true, this will request events the next time the |
| 223 | * state machine is idle. |
| 224 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 225 | atomic_t req_events; |
| 226 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 227 | /* |
| 228 | * If true, run the state machine to completion on every send |
| 229 | * call. Generally used after a panic to make sure stuff goes |
| 230 | * out. |
| 231 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 232 | int run_to_completion; |
| 233 | |
| 234 | /* The I/O port of an SI interface. */ |
| 235 | int port; |
| 236 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 237 | /* |
| 238 | * The space between start addresses of the two ports. For |
| 239 | * instance, if the first port is 0xca2 and the spacing is 4, then |
| 240 | * the second port is 0xca6. |
| 241 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 242 | unsigned int spacing; |
| 243 | |
| 244 | /* zero if no irq; */ |
| 245 | int irq; |
| 246 | |
| 247 | /* The timer for this si. */ |
| 248 | struct timer_list si_timer; |
| 249 | |
| 250 | /* The time (in jiffies) the last timeout occurred at. */ |
| 251 | unsigned long last_timeout_jiffies; |
| 252 | |
| 253 | /* Used to gracefully stop the timer without race conditions. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 254 | atomic_t stop_operation; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 256 | /* |
| 257 | * The driver will disable interrupts when it gets into a |
| 258 | * situation where it cannot handle messages due to lack of |
| 259 | * memory. Once that situation clears up, it will re-enable |
| 260 | * interrupts. |
| 261 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 262 | int interrupt_disabled; |
| 263 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 264 | /* From the get device id response... */ |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 265 | struct ipmi_device_id device_id; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 267 | /* Driver model stuff. */ |
| 268 | struct device *dev; |
| 269 | struct platform_device *pdev; |
| 270 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 271 | /* |
| 272 | * True if we allocated the device, false if it came from |
| 273 | * someplace else (like PCI). |
| 274 | */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 275 | int dev_registered; |
| 276 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 277 | /* Slave address, could be reported from DMI. */ |
| 278 | unsigned char slave_addr; |
| 279 | |
| 280 | /* Counters and things for the proc filesystem. */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 281 | atomic_t stats[SI_NUM_STATS]; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 282 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 283 | struct task_struct *thread; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 284 | |
| 285 | struct list_head link; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | }; |
| 287 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 288 | #define smi_inc_stat(smi, stat) \ |
| 289 | atomic_inc(&(smi)->stats[SI_STAT_ ## stat]) |
| 290 | #define smi_get_stat(smi, stat) \ |
| 291 | ((unsigned int) atomic_read(&(smi)->stats[SI_STAT_ ## stat])) |
| 292 | |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 293 | #define SI_MAX_PARMS 4 |
| 294 | |
| 295 | static int force_kipmid[SI_MAX_PARMS]; |
| 296 | static int num_force_kipmid; |
| 297 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 298 | static int unload_when_empty = 1; |
| 299 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 300 | static int try_smi_init(struct smi_info *smi); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 301 | static void cleanup_one_si(struct smi_info *to_clean); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 302 | |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 303 | static ATOMIC_NOTIFIER_HEAD(xaction_notifier_list); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 304 | static int register_xaction_notifier(struct notifier_block *nb) |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 305 | { |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 306 | return atomic_notifier_chain_register(&xaction_notifier_list, nb); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 307 | } |
| 308 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 309 | static void deliver_recv_msg(struct smi_info *smi_info, |
| 310 | struct ipmi_smi_msg *msg) |
| 311 | { |
| 312 | /* Deliver the message to the upper layer with the lock |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 313 | released. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 314 | spin_unlock(&(smi_info->si_lock)); |
| 315 | ipmi_smi_msg_received(smi_info->intf, msg); |
| 316 | spin_lock(&(smi_info->si_lock)); |
| 317 | } |
| 318 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 319 | static void return_hosed_msg(struct smi_info *smi_info, int cCode) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 320 | { |
| 321 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 322 | |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 323 | if (cCode < 0 || cCode > IPMI_ERR_UNSPECIFIED) |
| 324 | cCode = IPMI_ERR_UNSPECIFIED; |
| 325 | /* else use it as is */ |
| 326 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 327 | /* Make it a reponse */ |
| 328 | msg->rsp[0] = msg->data[0] | 4; |
| 329 | msg->rsp[1] = msg->data[1]; |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 330 | msg->rsp[2] = cCode; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 331 | msg->rsp_size = 3; |
| 332 | |
| 333 | smi_info->curr_msg = NULL; |
| 334 | deliver_recv_msg(smi_info, msg); |
| 335 | } |
| 336 | |
| 337 | static enum si_sm_result start_next_msg(struct smi_info *smi_info) |
| 338 | { |
| 339 | int rv; |
| 340 | struct list_head *entry = NULL; |
| 341 | #ifdef DEBUG_TIMING |
| 342 | struct timeval t; |
| 343 | #endif |
| 344 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 345 | /* |
| 346 | * No need to save flags, we aleady have interrupts off and we |
| 347 | * already hold the SMI lock. |
| 348 | */ |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 349 | if (!smi_info->run_to_completion) |
| 350 | spin_lock(&(smi_info->msg_lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
| 352 | /* Pick the high priority queue first. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 353 | if (!list_empty(&(smi_info->hp_xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 354 | entry = smi_info->hp_xmit_msgs.next; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 355 | } else if (!list_empty(&(smi_info->xmit_msgs))) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 356 | entry = smi_info->xmit_msgs.next; |
| 357 | } |
| 358 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 359 | if (!entry) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 360 | smi_info->curr_msg = NULL; |
| 361 | rv = SI_SM_IDLE; |
| 362 | } else { |
| 363 | int err; |
| 364 | |
| 365 | list_del(entry); |
| 366 | smi_info->curr_msg = list_entry(entry, |
| 367 | struct ipmi_smi_msg, |
| 368 | link); |
| 369 | #ifdef DEBUG_TIMING |
| 370 | do_gettimeofday(&t); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 371 | printk(KERN_DEBUG "**Start2: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | #endif |
Alan Stern | e041c68 | 2006-03-27 01:16:30 -0800 | [diff] [blame] | 373 | err = atomic_notifier_call_chain(&xaction_notifier_list, |
| 374 | 0, smi_info); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 375 | if (err & NOTIFY_STOP_MASK) { |
| 376 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 377 | goto out; |
| 378 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 379 | err = smi_info->handlers->start_transaction( |
| 380 | smi_info->si_sm, |
| 381 | smi_info->curr_msg->data, |
| 382 | smi_info->curr_msg->data_size); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 383 | if (err) |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 384 | return_hosed_msg(smi_info, err); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 385 | |
| 386 | rv = SI_SM_CALL_WITHOUT_DELAY; |
| 387 | } |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 388 | out: |
Konstantin Baydarov | 5956dce | 2008-04-29 01:01:03 -0700 | [diff] [blame] | 389 | if (!smi_info->run_to_completion) |
| 390 | spin_unlock(&(smi_info->msg_lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 391 | |
| 392 | return rv; |
| 393 | } |
| 394 | |
| 395 | static void start_enable_irq(struct smi_info *smi_info) |
| 396 | { |
| 397 | unsigned char msg[2]; |
| 398 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 399 | /* |
| 400 | * If we are enabling interrupts, we have to tell the |
| 401 | * BMC to use them. |
| 402 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 403 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 404 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 405 | |
| 406 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 407 | smi_info->si_state = SI_ENABLE_INTERRUPTS1; |
| 408 | } |
| 409 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 410 | static void start_disable_irq(struct smi_info *smi_info) |
| 411 | { |
| 412 | unsigned char msg[2]; |
| 413 | |
| 414 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 415 | msg[1] = IPMI_GET_BMC_GLOBAL_ENABLES_CMD; |
| 416 | |
| 417 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 418 | smi_info->si_state = SI_DISABLE_INTERRUPTS1; |
| 419 | } |
| 420 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 421 | static void start_clear_flags(struct smi_info *smi_info) |
| 422 | { |
| 423 | unsigned char msg[3]; |
| 424 | |
| 425 | /* Make sure the watchdog pre-timeout flag is not set at startup. */ |
| 426 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 427 | msg[1] = IPMI_CLEAR_MSG_FLAGS_CMD; |
| 428 | msg[2] = WDT_PRE_TIMEOUT_INT; |
| 429 | |
| 430 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 3); |
| 431 | smi_info->si_state = SI_CLEARING_FLAGS; |
| 432 | } |
| 433 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 434 | /* |
| 435 | * When we have a situtaion where we run out of memory and cannot |
| 436 | * allocate messages, we just leave them in the BMC and run the system |
| 437 | * polled until we can allocate some memory. Once we have some |
| 438 | * memory, we will re-enable the interrupt. |
| 439 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | static inline void disable_si_irq(struct smi_info *smi_info) |
| 441 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 442 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 443 | start_disable_irq(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 444 | smi_info->interrupt_disabled = 1; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | static inline void enable_si_irq(struct smi_info *smi_info) |
| 449 | { |
| 450 | if ((smi_info->irq) && (smi_info->interrupt_disabled)) { |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 451 | start_enable_irq(smi_info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 452 | smi_info->interrupt_disabled = 0; |
| 453 | } |
| 454 | } |
| 455 | |
| 456 | static void handle_flags(struct smi_info *smi_info) |
| 457 | { |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 458 | retry: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 459 | if (smi_info->msg_flags & WDT_PRE_TIMEOUT_INT) { |
| 460 | /* Watchdog pre-timeout */ |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 461 | smi_inc_stat(smi_info, watchdog_pretimeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 462 | |
| 463 | start_clear_flags(smi_info); |
| 464 | smi_info->msg_flags &= ~WDT_PRE_TIMEOUT_INT; |
| 465 | spin_unlock(&(smi_info->si_lock)); |
| 466 | ipmi_smi_watchdog_pretimeout(smi_info->intf); |
| 467 | spin_lock(&(smi_info->si_lock)); |
| 468 | } else if (smi_info->msg_flags & RECEIVE_MSG_AVAIL) { |
| 469 | /* Messages available. */ |
| 470 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 471 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | disable_si_irq(smi_info); |
| 473 | smi_info->si_state = SI_NORMAL; |
| 474 | return; |
| 475 | } |
| 476 | enable_si_irq(smi_info); |
| 477 | |
| 478 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 479 | smi_info->curr_msg->data[1] = IPMI_GET_MSG_CMD; |
| 480 | smi_info->curr_msg->data_size = 2; |
| 481 | |
| 482 | smi_info->handlers->start_transaction( |
| 483 | smi_info->si_sm, |
| 484 | smi_info->curr_msg->data, |
| 485 | smi_info->curr_msg->data_size); |
| 486 | smi_info->si_state = SI_GETTING_MESSAGES; |
| 487 | } else if (smi_info->msg_flags & EVENT_MSG_BUFFER_FULL) { |
| 488 | /* Events available. */ |
| 489 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 490 | if (!smi_info->curr_msg) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 491 | disable_si_irq(smi_info); |
| 492 | smi_info->si_state = SI_NORMAL; |
| 493 | return; |
| 494 | } |
| 495 | enable_si_irq(smi_info); |
| 496 | |
| 497 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 498 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 499 | smi_info->curr_msg->data_size = 2; |
| 500 | |
| 501 | smi_info->handlers->start_transaction( |
| 502 | smi_info->si_sm, |
| 503 | smi_info->curr_msg->data, |
| 504 | smi_info->curr_msg->data_size); |
| 505 | smi_info->si_state = SI_GETTING_EVENTS; |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 506 | } else if (smi_info->msg_flags & OEM_DATA_AVAIL && |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 507 | smi_info->oem_data_avail_handler) { |
Corey Minyard | 4064d5e | 2006-09-16 12:15:41 -0700 | [diff] [blame] | 508 | if (smi_info->oem_data_avail_handler(smi_info)) |
| 509 | goto retry; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 510 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 511 | smi_info->si_state = SI_NORMAL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 512 | } |
| 513 | |
| 514 | static void handle_transaction_done(struct smi_info *smi_info) |
| 515 | { |
| 516 | struct ipmi_smi_msg *msg; |
| 517 | #ifdef DEBUG_TIMING |
| 518 | struct timeval t; |
| 519 | |
| 520 | do_gettimeofday(&t); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 521 | printk(KERN_DEBUG "**Done: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 522 | #endif |
| 523 | switch (smi_info->si_state) { |
| 524 | case SI_NORMAL: |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 525 | if (!smi_info->curr_msg) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 526 | break; |
| 527 | |
| 528 | smi_info->curr_msg->rsp_size |
| 529 | = smi_info->handlers->get_result( |
| 530 | smi_info->si_sm, |
| 531 | smi_info->curr_msg->rsp, |
| 532 | IPMI_MAX_MSG_LENGTH); |
| 533 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 534 | /* |
| 535 | * Do this here becase deliver_recv_msg() releases the |
| 536 | * lock, and a new message can be put in during the |
| 537 | * time the lock is released. |
| 538 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 539 | msg = smi_info->curr_msg; |
| 540 | smi_info->curr_msg = NULL; |
| 541 | deliver_recv_msg(smi_info, msg); |
| 542 | break; |
| 543 | |
| 544 | case SI_GETTING_FLAGS: |
| 545 | { |
| 546 | unsigned char msg[4]; |
| 547 | unsigned int len; |
| 548 | |
| 549 | /* We got the flags from the SMI, now handle them. */ |
| 550 | len = smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 551 | if (msg[2] != 0) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 552 | /* Error fetching flags, just give up for now. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 553 | smi_info->si_state = SI_NORMAL; |
| 554 | } else if (len < 4) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 555 | /* |
| 556 | * Hmm, no flags. That's technically illegal, but |
| 557 | * don't use uninitialized data. |
| 558 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 559 | smi_info->si_state = SI_NORMAL; |
| 560 | } else { |
| 561 | smi_info->msg_flags = msg[3]; |
| 562 | handle_flags(smi_info); |
| 563 | } |
| 564 | break; |
| 565 | } |
| 566 | |
| 567 | case SI_CLEARING_FLAGS: |
| 568 | case SI_CLEARING_FLAGS_THEN_SET_IRQ: |
| 569 | { |
| 570 | unsigned char msg[3]; |
| 571 | |
| 572 | /* We cleared the flags. */ |
| 573 | smi_info->handlers->get_result(smi_info->si_sm, msg, 3); |
| 574 | if (msg[2] != 0) { |
| 575 | /* Error clearing flags */ |
| 576 | printk(KERN_WARNING |
| 577 | "ipmi_si: Error clearing flags: %2.2x\n", |
| 578 | msg[2]); |
| 579 | } |
| 580 | if (smi_info->si_state == SI_CLEARING_FLAGS_THEN_SET_IRQ) |
| 581 | start_enable_irq(smi_info); |
| 582 | else |
| 583 | smi_info->si_state = SI_NORMAL; |
| 584 | break; |
| 585 | } |
| 586 | |
| 587 | case SI_GETTING_EVENTS: |
| 588 | { |
| 589 | smi_info->curr_msg->rsp_size |
| 590 | = smi_info->handlers->get_result( |
| 591 | smi_info->si_sm, |
| 592 | smi_info->curr_msg->rsp, |
| 593 | IPMI_MAX_MSG_LENGTH); |
| 594 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 595 | /* |
| 596 | * Do this here becase deliver_recv_msg() releases the |
| 597 | * lock, and a new message can be put in during the |
| 598 | * time the lock is released. |
| 599 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 600 | msg = smi_info->curr_msg; |
| 601 | smi_info->curr_msg = NULL; |
| 602 | if (msg->rsp[2] != 0) { |
| 603 | /* Error getting event, probably done. */ |
| 604 | msg->done(msg); |
| 605 | |
| 606 | /* Take off the event flag. */ |
| 607 | smi_info->msg_flags &= ~EVENT_MSG_BUFFER_FULL; |
| 608 | handle_flags(smi_info); |
| 609 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 610 | smi_inc_stat(smi_info, events); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 611 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 612 | /* |
| 613 | * Do this before we deliver the message |
| 614 | * because delivering the message releases the |
| 615 | * lock and something else can mess with the |
| 616 | * state. |
| 617 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 618 | handle_flags(smi_info); |
| 619 | |
| 620 | deliver_recv_msg(smi_info, msg); |
| 621 | } |
| 622 | break; |
| 623 | } |
| 624 | |
| 625 | case SI_GETTING_MESSAGES: |
| 626 | { |
| 627 | smi_info->curr_msg->rsp_size |
| 628 | = smi_info->handlers->get_result( |
| 629 | smi_info->si_sm, |
| 630 | smi_info->curr_msg->rsp, |
| 631 | IPMI_MAX_MSG_LENGTH); |
| 632 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 633 | /* |
| 634 | * Do this here becase deliver_recv_msg() releases the |
| 635 | * lock, and a new message can be put in during the |
| 636 | * time the lock is released. |
| 637 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 638 | msg = smi_info->curr_msg; |
| 639 | smi_info->curr_msg = NULL; |
| 640 | if (msg->rsp[2] != 0) { |
| 641 | /* Error getting event, probably done. */ |
| 642 | msg->done(msg); |
| 643 | |
| 644 | /* Take off the msg flag. */ |
| 645 | smi_info->msg_flags &= ~RECEIVE_MSG_AVAIL; |
| 646 | handle_flags(smi_info); |
| 647 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 648 | smi_inc_stat(smi_info, incoming_messages); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 649 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 650 | /* |
| 651 | * Do this before we deliver the message |
| 652 | * because delivering the message releases the |
| 653 | * lock and something else can mess with the |
| 654 | * state. |
| 655 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 656 | handle_flags(smi_info); |
| 657 | |
| 658 | deliver_recv_msg(smi_info, msg); |
| 659 | } |
| 660 | break; |
| 661 | } |
| 662 | |
| 663 | case SI_ENABLE_INTERRUPTS1: |
| 664 | { |
| 665 | unsigned char msg[4]; |
| 666 | |
| 667 | /* We got the flags from the SMI, now handle them. */ |
| 668 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 669 | if (msg[2] != 0) { |
| 670 | printk(KERN_WARNING |
| 671 | "ipmi_si: Could not enable interrupts" |
| 672 | ", failed get, using polled mode.\n"); |
| 673 | smi_info->si_state = SI_NORMAL; |
| 674 | } else { |
| 675 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 676 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 677 | msg[2] = (msg[3] | |
| 678 | IPMI_BMC_RCV_MSG_INTR | |
| 679 | IPMI_BMC_EVT_MSG_INTR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 680 | smi_info->handlers->start_transaction( |
| 681 | smi_info->si_sm, msg, 3); |
| 682 | smi_info->si_state = SI_ENABLE_INTERRUPTS2; |
| 683 | } |
| 684 | break; |
| 685 | } |
| 686 | |
| 687 | case SI_ENABLE_INTERRUPTS2: |
| 688 | { |
| 689 | unsigned char msg[4]; |
| 690 | |
| 691 | /* We got the flags from the SMI, now handle them. */ |
| 692 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 693 | if (msg[2] != 0) { |
| 694 | printk(KERN_WARNING |
| 695 | "ipmi_si: Could not enable interrupts" |
| 696 | ", failed set, using polled mode.\n"); |
| 697 | } |
| 698 | smi_info->si_state = SI_NORMAL; |
| 699 | break; |
| 700 | } |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 701 | |
| 702 | case SI_DISABLE_INTERRUPTS1: |
| 703 | { |
| 704 | unsigned char msg[4]; |
| 705 | |
| 706 | /* We got the flags from the SMI, now handle them. */ |
| 707 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 708 | if (msg[2] != 0) { |
| 709 | printk(KERN_WARNING |
| 710 | "ipmi_si: Could not disable interrupts" |
| 711 | ", failed get.\n"); |
| 712 | smi_info->si_state = SI_NORMAL; |
| 713 | } else { |
| 714 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 715 | msg[1] = IPMI_SET_BMC_GLOBAL_ENABLES_CMD; |
| 716 | msg[2] = (msg[3] & |
| 717 | ~(IPMI_BMC_RCV_MSG_INTR | |
| 718 | IPMI_BMC_EVT_MSG_INTR)); |
| 719 | smi_info->handlers->start_transaction( |
| 720 | smi_info->si_sm, msg, 3); |
| 721 | smi_info->si_state = SI_DISABLE_INTERRUPTS2; |
| 722 | } |
| 723 | break; |
| 724 | } |
| 725 | |
| 726 | case SI_DISABLE_INTERRUPTS2: |
| 727 | { |
| 728 | unsigned char msg[4]; |
| 729 | |
| 730 | /* We got the flags from the SMI, now handle them. */ |
| 731 | smi_info->handlers->get_result(smi_info->si_sm, msg, 4); |
| 732 | if (msg[2] != 0) { |
| 733 | printk(KERN_WARNING |
| 734 | "ipmi_si: Could not disable interrupts" |
| 735 | ", failed set.\n"); |
| 736 | } |
| 737 | smi_info->si_state = SI_NORMAL; |
| 738 | break; |
| 739 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 740 | } |
| 741 | } |
| 742 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 743 | /* |
| 744 | * Called on timeouts and events. Timeouts should pass the elapsed |
| 745 | * time, interrupts should pass in zero. Must be called with |
| 746 | * si_lock held and interrupts disabled. |
| 747 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 748 | static enum si_sm_result smi_event_handler(struct smi_info *smi_info, |
| 749 | int time) |
| 750 | { |
| 751 | enum si_sm_result si_sm_result; |
| 752 | |
| 753 | restart: |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 754 | /* |
| 755 | * There used to be a loop here that waited a little while |
| 756 | * (around 25us) before giving up. That turned out to be |
| 757 | * pointless, the minimum delays I was seeing were in the 300us |
| 758 | * range, which is far too long to wait in an interrupt. So |
| 759 | * we just run until the state machine tells us something |
| 760 | * happened or it needs a delay. |
| 761 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 762 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, time); |
| 763 | time = 0; |
| 764 | while (si_sm_result == SI_SM_CALL_WITHOUT_DELAY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 765 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 766 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 767 | if (si_sm_result == SI_SM_TRANSACTION_COMPLETE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 768 | smi_inc_stat(smi_info, complete_transactions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 769 | |
| 770 | handle_transaction_done(smi_info); |
| 771 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 772 | } else if (si_sm_result == SI_SM_HOSED) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 773 | smi_inc_stat(smi_info, hosed_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 774 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 775 | /* |
| 776 | * Do the before return_hosed_msg, because that |
| 777 | * releases the lock. |
| 778 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 779 | smi_info->si_state = SI_NORMAL; |
| 780 | if (smi_info->curr_msg != NULL) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 781 | /* |
| 782 | * If we were handling a user message, format |
| 783 | * a response to send to the upper layer to |
| 784 | * tell it about the error. |
| 785 | */ |
Corey Minyard | 4d7cbac | 2006-12-06 20:41:14 -0800 | [diff] [blame] | 786 | return_hosed_msg(smi_info, IPMI_ERR_UNSPECIFIED); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 787 | } |
| 788 | si_sm_result = smi_info->handlers->event(smi_info->si_sm, 0); |
| 789 | } |
| 790 | |
Corey Minyard | 4ea1842 | 2008-04-29 01:01:01 -0700 | [diff] [blame] | 791 | /* |
| 792 | * We prefer handling attn over new messages. But don't do |
| 793 | * this if there is not yet an upper layer to handle anything. |
| 794 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 795 | if (likely(smi_info->intf) && si_sm_result == SI_SM_ATTN) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 796 | unsigned char msg[2]; |
| 797 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 798 | smi_inc_stat(smi_info, attentions); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 799 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 800 | /* |
| 801 | * Got a attn, send down a get message flags to see |
| 802 | * what's causing it. It would be better to handle |
| 803 | * this in the upper layer, but due to the way |
| 804 | * interrupts work with the SMI, that's not really |
| 805 | * possible. |
| 806 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 807 | msg[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 808 | msg[1] = IPMI_GET_MSG_FLAGS_CMD; |
| 809 | |
| 810 | smi_info->handlers->start_transaction( |
| 811 | smi_info->si_sm, msg, 2); |
| 812 | smi_info->si_state = SI_GETTING_FLAGS; |
| 813 | goto restart; |
| 814 | } |
| 815 | |
| 816 | /* If we are currently idle, try to start the next message. */ |
| 817 | if (si_sm_result == SI_SM_IDLE) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 818 | smi_inc_stat(smi_info, idles); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 819 | |
| 820 | si_sm_result = start_next_msg(smi_info); |
| 821 | if (si_sm_result != SI_SM_IDLE) |
| 822 | goto restart; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 823 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 824 | |
| 825 | if ((si_sm_result == SI_SM_IDLE) |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 826 | && (atomic_read(&smi_info->req_events))) { |
| 827 | /* |
| 828 | * We are idle and the upper layer requested that I fetch |
| 829 | * events, so do so. |
| 830 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 831 | atomic_set(&smi_info->req_events, 0); |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 832 | |
| 833 | smi_info->curr_msg = ipmi_alloc_smi_msg(); |
| 834 | if (!smi_info->curr_msg) |
| 835 | goto out; |
| 836 | |
| 837 | smi_info->curr_msg->data[0] = (IPMI_NETFN_APP_REQUEST << 2); |
| 838 | smi_info->curr_msg->data[1] = IPMI_READ_EVENT_MSG_BUFFER_CMD; |
| 839 | smi_info->curr_msg->data_size = 2; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 840 | |
| 841 | smi_info->handlers->start_transaction( |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 842 | smi_info->si_sm, |
| 843 | smi_info->curr_msg->data, |
| 844 | smi_info->curr_msg->data_size); |
| 845 | smi_info->si_state = SI_GETTING_EVENTS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 846 | goto restart; |
| 847 | } |
Corey Minyard | 55162fb | 2006-12-06 20:41:04 -0800 | [diff] [blame] | 848 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 849 | return si_sm_result; |
| 850 | } |
| 851 | |
| 852 | static void sender(void *send_info, |
| 853 | struct ipmi_smi_msg *msg, |
| 854 | int priority) |
| 855 | { |
| 856 | struct smi_info *smi_info = send_info; |
| 857 | enum si_sm_result result; |
| 858 | unsigned long flags; |
| 859 | #ifdef DEBUG_TIMING |
| 860 | struct timeval t; |
| 861 | #endif |
| 862 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 863 | if (atomic_read(&smi_info->stop_operation)) { |
| 864 | msg->rsp[0] = msg->data[0] | 4; |
| 865 | msg->rsp[1] = msg->data[1]; |
| 866 | msg->rsp[2] = IPMI_ERR_UNSPECIFIED; |
| 867 | msg->rsp_size = 3; |
| 868 | deliver_recv_msg(smi_info, msg); |
| 869 | return; |
| 870 | } |
| 871 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 872 | #ifdef DEBUG_TIMING |
| 873 | do_gettimeofday(&t); |
| 874 | printk("**Enqueue: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 875 | #endif |
| 876 | |
| 877 | if (smi_info->run_to_completion) { |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 878 | /* |
| 879 | * If we are running to completion, then throw it in |
| 880 | * the list and run transactions until everything is |
| 881 | * clear. Priority doesn't matter here. |
| 882 | */ |
| 883 | |
| 884 | /* |
| 885 | * Run to completion means we are single-threaded, no |
| 886 | * need for locks. |
| 887 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 888 | list_add_tail(&(msg->link), &(smi_info->xmit_msgs)); |
| 889 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 890 | result = smi_event_handler(smi_info, 0); |
| 891 | while (result != SI_SM_IDLE) { |
| 892 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 893 | result = smi_event_handler(smi_info, |
| 894 | SI_SHORT_TIMEOUT_USEC); |
| 895 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 896 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 897 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 898 | |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 899 | spin_lock_irqsave(&smi_info->msg_lock, flags); |
| 900 | if (priority > 0) |
| 901 | list_add_tail(&msg->link, &smi_info->hp_xmit_msgs); |
| 902 | else |
| 903 | list_add_tail(&msg->link, &smi_info->xmit_msgs); |
| 904 | spin_unlock_irqrestore(&smi_info->msg_lock, flags); |
| 905 | |
| 906 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 907 | if (smi_info->si_state == SI_NORMAL && smi_info->curr_msg == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 908 | start_next_msg(smi_info); |
Corey Minyard | bda4c30 | 2008-04-29 01:01:02 -0700 | [diff] [blame] | 909 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 910 | } |
| 911 | |
| 912 | static void set_run_to_completion(void *send_info, int i_run_to_completion) |
| 913 | { |
| 914 | struct smi_info *smi_info = send_info; |
| 915 | enum si_sm_result result; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 916 | |
| 917 | smi_info->run_to_completion = i_run_to_completion; |
| 918 | if (i_run_to_completion) { |
| 919 | result = smi_event_handler(smi_info, 0); |
| 920 | while (result != SI_SM_IDLE) { |
| 921 | udelay(SI_SHORT_TIMEOUT_USEC); |
| 922 | result = smi_event_handler(smi_info, |
| 923 | SI_SHORT_TIMEOUT_USEC); |
| 924 | } |
| 925 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 926 | } |
| 927 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 928 | static int ipmi_thread(void *data) |
| 929 | { |
| 930 | struct smi_info *smi_info = data; |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 931 | unsigned long flags; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 932 | enum si_sm_result smi_result; |
| 933 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 934 | set_user_nice(current, 19); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 935 | while (!kthread_should_stop()) { |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 936 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
Corey Minyard | 8a3628d | 2006-03-31 02:30:40 -0800 | [diff] [blame] | 937 | smi_result = smi_event_handler(smi_info, 0); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 938 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 939 | if (smi_result == SI_SM_CALL_WITHOUT_DELAY) |
| 940 | ; /* do nothing */ |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 941 | else if (smi_result == SI_SM_CALL_WITH_DELAY) |
akpm@osdl.org | 3397973 | 2006-06-27 02:54:04 -0700 | [diff] [blame] | 942 | schedule(); |
Matt Domsch | e9a705a | 2005-11-07 01:00:04 -0800 | [diff] [blame] | 943 | else |
| 944 | schedule_timeout_interruptible(1); |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 945 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 946 | return 0; |
| 947 | } |
| 948 | |
| 949 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 950 | static void poll(void *send_info) |
| 951 | { |
| 952 | struct smi_info *smi_info = send_info; |
Corey Minyard | fcfa472 | 2007-10-18 03:07:09 -0700 | [diff] [blame] | 953 | unsigned long flags; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 954 | |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 955 | /* |
| 956 | * Make sure there is some delay in the poll loop so we can |
| 957 | * drive time forward and timeout things. |
| 958 | */ |
| 959 | udelay(10); |
Corey Minyard | fcfa472 | 2007-10-18 03:07:09 -0700 | [diff] [blame] | 960 | spin_lock_irqsave(&smi_info->si_lock, flags); |
Corey Minyard | 15c62e1 | 2006-12-06 20:41:06 -0800 | [diff] [blame] | 961 | smi_event_handler(smi_info, 10); |
Corey Minyard | fcfa472 | 2007-10-18 03:07:09 -0700 | [diff] [blame] | 962 | spin_unlock_irqrestore(&smi_info->si_lock, flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 963 | } |
| 964 | |
| 965 | static void request_events(void *send_info) |
| 966 | { |
| 967 | struct smi_info *smi_info = send_info; |
| 968 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 969 | if (atomic_read(&smi_info->stop_operation)) |
| 970 | return; |
| 971 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | atomic_set(&smi_info->req_events, 1); |
| 973 | } |
| 974 | |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 975 | static int initialized; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 976 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 977 | static void smi_timeout(unsigned long data) |
| 978 | { |
| 979 | struct smi_info *smi_info = (struct smi_info *) data; |
| 980 | enum si_sm_result smi_result; |
| 981 | unsigned long flags; |
| 982 | unsigned long jiffies_now; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 983 | long time_diff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 984 | #ifdef DEBUG_TIMING |
| 985 | struct timeval t; |
| 986 | #endif |
| 987 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 988 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 989 | #ifdef DEBUG_TIMING |
| 990 | do_gettimeofday(&t); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 991 | printk(KERN_DEBUG "**Timer: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 992 | #endif |
| 993 | jiffies_now = jiffies; |
Corey Minyard | c4edff1 | 2005-11-07 00:59:56 -0800 | [diff] [blame] | 994 | time_diff = (((long)jiffies_now - (long)smi_info->last_timeout_jiffies) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 995 | * SI_USEC_PER_JIFFY); |
| 996 | smi_result = smi_event_handler(smi_info, time_diff); |
| 997 | |
| 998 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 999 | |
| 1000 | smi_info->last_timeout_jiffies = jiffies_now; |
| 1001 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1002 | if ((smi_info->irq) && (!smi_info->interrupt_disabled)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1003 | /* Running with interrupts, only do long timeouts. */ |
| 1004 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1005 | smi_inc_stat(smi_info, long_timeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1006 | goto do_add_timer; |
| 1007 | } |
| 1008 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1009 | /* |
| 1010 | * If the state machine asks for a short delay, then shorten |
| 1011 | * the timer timeout. |
| 1012 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1013 | if (smi_result == SI_SM_CALL_WITH_DELAY) { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1014 | smi_inc_stat(smi_info, short_timeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1015 | smi_info->si_timer.expires = jiffies + 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1016 | } else { |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1017 | smi_inc_stat(smi_info, long_timeouts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1018 | smi_info->si_timer.expires = jiffies + SI_TIMEOUT_JIFFIES; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | do_add_timer: |
| 1022 | add_timer(&(smi_info->si_timer)); |
| 1023 | } |
| 1024 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1025 | static irqreturn_t si_irq_handler(int irq, void *data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1026 | { |
| 1027 | struct smi_info *smi_info = data; |
| 1028 | unsigned long flags; |
| 1029 | #ifdef DEBUG_TIMING |
| 1030 | struct timeval t; |
| 1031 | #endif |
| 1032 | |
| 1033 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1034 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1035 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1036 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1037 | #ifdef DEBUG_TIMING |
| 1038 | do_gettimeofday(&t); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1039 | printk(KERN_DEBUG "**Interrupt: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1040 | #endif |
| 1041 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1042 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1043 | return IRQ_HANDLED; |
| 1044 | } |
| 1045 | |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1046 | static irqreturn_t si_bt_irq_handler(int irq, void *data) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1047 | { |
| 1048 | struct smi_info *smi_info = data; |
| 1049 | /* We need to clear the IRQ flag for the BT interface. */ |
| 1050 | smi_info->io.outputb(&smi_info->io, IPMI_BT_INTMASK_REG, |
| 1051 | IPMI_BT_INTMASK_CLEAR_IRQ_BIT |
| 1052 | | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
David Howells | 7d12e78 | 2006-10-05 14:55:46 +0100 | [diff] [blame] | 1053 | return si_irq_handler(irq, data); |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1054 | } |
| 1055 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1056 | static int smi_start_processing(void *send_info, |
| 1057 | ipmi_smi_t intf) |
| 1058 | { |
| 1059 | struct smi_info *new_smi = send_info; |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1060 | int enable = 0; |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1061 | |
| 1062 | new_smi->intf = intf; |
| 1063 | |
Corey Minyard | c45adc3 | 2007-10-18 03:07:08 -0700 | [diff] [blame] | 1064 | /* Try to claim any interrupts. */ |
| 1065 | if (new_smi->irq_setup) |
| 1066 | new_smi->irq_setup(new_smi); |
| 1067 | |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1068 | /* Set up the timer that drives the interface. */ |
| 1069 | setup_timer(&new_smi->si_timer, smi_timeout, (long)new_smi); |
| 1070 | new_smi->last_timeout_jiffies = jiffies; |
| 1071 | mod_timer(&new_smi->si_timer, jiffies + SI_TIMEOUT_JIFFIES); |
| 1072 | |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1073 | /* |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1074 | * Check if the user forcefully enabled the daemon. |
| 1075 | */ |
| 1076 | if (new_smi->intf_num < num_force_kipmid) |
| 1077 | enable = force_kipmid[new_smi->intf_num]; |
| 1078 | /* |
Corey Minyard | df3fe8d | 2006-09-30 23:28:20 -0700 | [diff] [blame] | 1079 | * The BT interface is efficient enough to not need a thread, |
| 1080 | * and there is no need for a thread if we have interrupts. |
| 1081 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1082 | else if ((new_smi->si_type != SI_BT) && (!new_smi->irq)) |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1083 | enable = 1; |
| 1084 | |
| 1085 | if (enable) { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1086 | new_smi->thread = kthread_run(ipmi_thread, new_smi, |
| 1087 | "kipmi%d", new_smi->intf_num); |
| 1088 | if (IS_ERR(new_smi->thread)) { |
| 1089 | printk(KERN_NOTICE "ipmi_si_intf: Could not start" |
| 1090 | " kernel thread due to error %ld, only using" |
| 1091 | " timers to drive the interface\n", |
| 1092 | PTR_ERR(new_smi->thread)); |
| 1093 | new_smi->thread = NULL; |
| 1094 | } |
| 1095 | } |
| 1096 | |
| 1097 | return 0; |
| 1098 | } |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1099 | |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1100 | static void set_maintenance_mode(void *send_info, int enable) |
| 1101 | { |
| 1102 | struct smi_info *smi_info = send_info; |
| 1103 | |
| 1104 | if (!enable) |
| 1105 | atomic_set(&smi_info->req_events, 0); |
| 1106 | } |
| 1107 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1108 | static struct ipmi_smi_handlers handlers = { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1109 | .owner = THIS_MODULE, |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 1110 | .start_processing = smi_start_processing, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1111 | .sender = sender, |
| 1112 | .request_events = request_events, |
Corey Minyard | b967513 | 2006-12-06 20:41:02 -0800 | [diff] [blame] | 1113 | .set_maintenance_mode = set_maintenance_mode, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | .set_run_to_completion = set_run_to_completion, |
| 1115 | .poll = poll, |
| 1116 | }; |
| 1117 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1118 | /* |
| 1119 | * There can be 4 IO ports passed in (with or without IRQs), 4 addresses, |
| 1120 | * a default IO port, and 1 ACPI/SPMI address. That sets SI_MAX_DRIVERS. |
| 1121 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1122 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1123 | static LIST_HEAD(smi_infos); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 1124 | static DEFINE_MUTEX(smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1125 | static int smi_num; /* Used to sequence the SMIs */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1126 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1127 | #define DEFAULT_REGSPACING 1 |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 1128 | #define DEFAULT_REGSIZE 1 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1129 | |
| 1130 | static int si_trydefaults = 1; |
| 1131 | static char *si_type[SI_MAX_PARMS]; |
| 1132 | #define MAX_SI_TYPE_STR 30 |
| 1133 | static char si_type_str[MAX_SI_TYPE_STR]; |
| 1134 | static unsigned long addrs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1135 | static unsigned int num_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | static unsigned int ports[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1137 | static unsigned int num_ports; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1138 | static int irqs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1139 | static unsigned int num_irqs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1140 | static int regspacings[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1141 | static unsigned int num_regspacings; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | static int regsizes[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1143 | static unsigned int num_regsizes; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1144 | static int regshifts[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1145 | static unsigned int num_regshifts; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1146 | static int slave_addrs[SI_MAX_PARMS]; |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1147 | static unsigned int num_slave_addrs; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1148 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1149 | #define IPMI_IO_ADDR_SPACE 0 |
| 1150 | #define IPMI_MEM_ADDR_SPACE 1 |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1151 | static char *addr_space_to_str[] = { "i/o", "mem" }; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1152 | |
| 1153 | static int hotmod_handler(const char *val, struct kernel_param *kp); |
| 1154 | |
| 1155 | module_param_call(hotmod, hotmod_handler, NULL, NULL, 0200); |
| 1156 | MODULE_PARM_DESC(hotmod, "Add and remove interfaces. See" |
| 1157 | " Documentation/IPMI.txt in the kernel sources for the" |
| 1158 | " gory details."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1159 | |
| 1160 | module_param_named(trydefaults, si_trydefaults, bool, 0); |
| 1161 | MODULE_PARM_DESC(trydefaults, "Setting this to 'false' will disable the" |
| 1162 | " default scan of the KCS and SMIC interface at the standard" |
| 1163 | " address"); |
| 1164 | module_param_string(type, si_type_str, MAX_SI_TYPE_STR, 0); |
| 1165 | MODULE_PARM_DESC(type, "Defines the type of each interface, each" |
| 1166 | " interface separated by commas. The types are 'kcs'," |
| 1167 | " 'smic', and 'bt'. For example si_type=kcs,bt will set" |
| 1168 | " the first interface to kcs and the second to bt"); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1169 | module_param_array(addrs, ulong, &num_addrs, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | MODULE_PARM_DESC(addrs, "Sets the memory address of each interface, the" |
| 1171 | " addresses separated by commas. Only use if an interface" |
| 1172 | " is in memory. Otherwise, set it to zero or leave" |
| 1173 | " it blank."); |
Al Viro | 64a6f95 | 2007-10-14 19:35:30 +0100 | [diff] [blame] | 1174 | module_param_array(ports, uint, &num_ports, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1175 | MODULE_PARM_DESC(ports, "Sets the port address of each interface, the" |
| 1176 | " addresses separated by commas. Only use if an interface" |
| 1177 | " is a port. Otherwise, set it to zero or leave" |
| 1178 | " it blank."); |
| 1179 | module_param_array(irqs, int, &num_irqs, 0); |
| 1180 | MODULE_PARM_DESC(irqs, "Sets the interrupt of each interface, the" |
| 1181 | " addresses separated by commas. Only use if an interface" |
| 1182 | " has an interrupt. Otherwise, set it to zero or leave" |
| 1183 | " it blank."); |
| 1184 | module_param_array(regspacings, int, &num_regspacings, 0); |
| 1185 | MODULE_PARM_DESC(regspacings, "The number of bytes between the start address" |
| 1186 | " and each successive register used by the interface. For" |
| 1187 | " instance, if the start address is 0xca2 and the spacing" |
| 1188 | " is 2, then the second address is at 0xca4. Defaults" |
| 1189 | " to 1."); |
| 1190 | module_param_array(regsizes, int, &num_regsizes, 0); |
| 1191 | MODULE_PARM_DESC(regsizes, "The size of the specific IPMI register in bytes." |
| 1192 | " This should generally be 1, 2, 4, or 8 for an 8-bit," |
| 1193 | " 16-bit, 32-bit, or 64-bit register. Use this if you" |
| 1194 | " the 8-bit IPMI register has to be read from a larger" |
| 1195 | " register."); |
| 1196 | module_param_array(regshifts, int, &num_regshifts, 0); |
| 1197 | MODULE_PARM_DESC(regshifts, "The amount to shift the data read from the." |
| 1198 | " IPMI register, in bits. For instance, if the data" |
| 1199 | " is read from a 32-bit word and the IPMI data is in" |
| 1200 | " bit 8-15, then the shift would be 8"); |
| 1201 | module_param_array(slave_addrs, int, &num_slave_addrs, 0); |
| 1202 | MODULE_PARM_DESC(slave_addrs, "Set the default IPMB slave address for" |
| 1203 | " the controller. Normally this is 0x20, but can be" |
| 1204 | " overridden by this parm. This is an array indexed" |
| 1205 | " by interface number."); |
Corey Minyard | a51f4a8 | 2006-10-03 01:13:59 -0700 | [diff] [blame] | 1206 | module_param_array(force_kipmid, int, &num_force_kipmid, 0); |
| 1207 | MODULE_PARM_DESC(force_kipmid, "Force the kipmi daemon to be enabled (1) or" |
| 1208 | " disabled(0). Normally the IPMI driver auto-detects" |
| 1209 | " this, but the value may be overridden by this parm."); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1210 | module_param(unload_when_empty, int, 0); |
| 1211 | MODULE_PARM_DESC(unload_when_empty, "Unload the module if no interfaces are" |
| 1212 | " specified or found, default is 1. Setting to 0" |
| 1213 | " is useful for hot add of devices using hotmod."); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1214 | |
| 1215 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1216 | static void std_irq_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1217 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1218 | if (info->si_type == SI_BT) |
| 1219 | /* Disable the interrupt in the BT interface. */ |
| 1220 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, 0); |
| 1221 | free_irq(info->irq, info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1222 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1223 | |
| 1224 | static int std_irq_setup(struct smi_info *info) |
| 1225 | { |
| 1226 | int rv; |
| 1227 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1228 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1229 | return 0; |
| 1230 | |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1231 | if (info->si_type == SI_BT) { |
| 1232 | rv = request_irq(info->irq, |
| 1233 | si_bt_irq_handler, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 1234 | IRQF_SHARED | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1235 | DEVICE_NAME, |
| 1236 | info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1237 | if (!rv) |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1238 | /* Enable the interrupt in the BT interface. */ |
| 1239 | info->io.outputb(&info->io, IPMI_BT_INTMASK_REG, |
| 1240 | IPMI_BT_INTMASK_ENABLE_IRQ_BIT); |
| 1241 | } else |
| 1242 | rv = request_irq(info->irq, |
| 1243 | si_irq_handler, |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 1244 | IRQF_SHARED | IRQF_DISABLED, |
Corey Minyard | 9dbf68f | 2005-05-01 08:59:11 -0700 | [diff] [blame] | 1245 | DEVICE_NAME, |
| 1246 | info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1247 | if (rv) { |
| 1248 | printk(KERN_WARNING |
| 1249 | "ipmi_si: %s unable to claim interrupt %d," |
| 1250 | " running polled\n", |
| 1251 | DEVICE_NAME, info->irq); |
| 1252 | info->irq = 0; |
| 1253 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1254 | info->irq_cleanup = std_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1255 | printk(" Using irq %d\n", info->irq); |
| 1256 | } |
| 1257 | |
| 1258 | return rv; |
| 1259 | } |
| 1260 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1261 | static unsigned char port_inb(struct si_sm_io *io, unsigned int offset) |
| 1262 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1263 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1264 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1265 | return inb(addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1266 | } |
| 1267 | |
| 1268 | static void port_outb(struct si_sm_io *io, unsigned int offset, |
| 1269 | unsigned char b) |
| 1270 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1271 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1272 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1273 | outb(b, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1274 | } |
| 1275 | |
| 1276 | static unsigned char port_inw(struct si_sm_io *io, unsigned int offset) |
| 1277 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1278 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1279 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1280 | return (inw(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1281 | } |
| 1282 | |
| 1283 | static void port_outw(struct si_sm_io *io, unsigned int offset, |
| 1284 | unsigned char b) |
| 1285 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1286 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1287 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1288 | outw(b << io->regshift, addr + (offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1289 | } |
| 1290 | |
| 1291 | static unsigned char port_inl(struct si_sm_io *io, unsigned int offset) |
| 1292 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1293 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1294 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1295 | return (inl(addr + (offset * io->regspacing)) >> io->regshift) & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1296 | } |
| 1297 | |
| 1298 | static void port_outl(struct si_sm_io *io, unsigned int offset, |
| 1299 | unsigned char b) |
| 1300 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1301 | unsigned int addr = io->addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1302 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1303 | outl(b << io->regshift, addr+(offset * io->regspacing)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1304 | } |
| 1305 | |
| 1306 | static void port_cleanup(struct smi_info *info) |
| 1307 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1308 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1309 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1310 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1311 | if (addr) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1312 | for (idx = 0; idx < info->io_size; idx++) |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1313 | release_region(addr + idx * info->io.regspacing, |
| 1314 | info->io.regsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1315 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1316 | } |
| 1317 | |
| 1318 | static int port_setup(struct smi_info *info) |
| 1319 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1320 | unsigned int addr = info->io.addr_data; |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1321 | int idx; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1322 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1323 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1324 | return -ENODEV; |
| 1325 | |
| 1326 | info->io_cleanup = port_cleanup; |
| 1327 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1328 | /* |
| 1329 | * Figure out the actual inb/inw/inl/etc routine to use based |
| 1330 | * upon the register size. |
| 1331 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1332 | switch (info->io.regsize) { |
| 1333 | case 1: |
| 1334 | info->io.inputb = port_inb; |
| 1335 | info->io.outputb = port_outb; |
| 1336 | break; |
| 1337 | case 2: |
| 1338 | info->io.inputb = port_inw; |
| 1339 | info->io.outputb = port_outw; |
| 1340 | break; |
| 1341 | case 4: |
| 1342 | info->io.inputb = port_inl; |
| 1343 | info->io.outputb = port_outl; |
| 1344 | break; |
| 1345 | default: |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1346 | printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1347 | info->io.regsize); |
| 1348 | return -EINVAL; |
| 1349 | } |
| 1350 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1351 | /* |
| 1352 | * Some BIOSes reserve disjoint I/O regions in their ACPI |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1353 | * tables. This causes problems when trying to register the |
| 1354 | * entire I/O region. Therefore we must register each I/O |
| 1355 | * port separately. |
| 1356 | */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1357 | for (idx = 0; idx < info->io_size; idx++) { |
Corey Minyard | d61a3ea | 2006-05-30 21:25:57 -0700 | [diff] [blame] | 1358 | if (request_region(addr + idx * info->io.regspacing, |
| 1359 | info->io.regsize, DEVICE_NAME) == NULL) { |
| 1360 | /* Undo allocations */ |
| 1361 | while (idx--) { |
| 1362 | release_region(addr + idx * info->io.regspacing, |
| 1363 | info->io.regsize); |
| 1364 | } |
| 1365 | return -EIO; |
| 1366 | } |
| 1367 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1368 | return 0; |
| 1369 | } |
| 1370 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1371 | static unsigned char intf_mem_inb(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | { |
| 1373 | return readb((io->addr)+(offset * io->regspacing)); |
| 1374 | } |
| 1375 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1376 | static void intf_mem_outb(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1377 | unsigned char b) |
| 1378 | { |
| 1379 | writeb(b, (io->addr)+(offset * io->regspacing)); |
| 1380 | } |
| 1381 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1382 | static unsigned char intf_mem_inw(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1383 | { |
| 1384 | return (readw((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1385 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1386 | } |
| 1387 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1388 | static void intf_mem_outw(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1389 | unsigned char b) |
| 1390 | { |
| 1391 | writeb(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1392 | } |
| 1393 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1394 | static unsigned char intf_mem_inl(struct si_sm_io *io, unsigned int offset) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1395 | { |
| 1396 | return (readl((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1397 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1398 | } |
| 1399 | |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1400 | static void intf_mem_outl(struct si_sm_io *io, unsigned int offset, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1401 | unsigned char b) |
| 1402 | { |
| 1403 | writel(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1404 | } |
| 1405 | |
| 1406 | #ifdef readq |
| 1407 | static unsigned char mem_inq(struct si_sm_io *io, unsigned int offset) |
| 1408 | { |
| 1409 | return (readq((io->addr)+(offset * io->regspacing)) >> io->regshift) |
Alexey Dobriyan | 64d9fe6 | 2006-11-08 17:44:56 -0800 | [diff] [blame] | 1410 | & 0xff; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | } |
| 1412 | |
| 1413 | static void mem_outq(struct si_sm_io *io, unsigned int offset, |
| 1414 | unsigned char b) |
| 1415 | { |
| 1416 | writeq(b << io->regshift, (io->addr)+(offset * io->regspacing)); |
| 1417 | } |
| 1418 | #endif |
| 1419 | |
| 1420 | static void mem_cleanup(struct smi_info *info) |
| 1421 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1422 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1423 | int mapsize; |
| 1424 | |
| 1425 | if (info->io.addr) { |
| 1426 | iounmap(info->io.addr); |
| 1427 | |
| 1428 | mapsize = ((info->io_size * info->io.regspacing) |
| 1429 | - (info->io.regspacing - info->io.regsize)); |
| 1430 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1431 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1432 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1433 | } |
| 1434 | |
| 1435 | static int mem_setup(struct smi_info *info) |
| 1436 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1437 | unsigned long addr = info->io.addr_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1438 | int mapsize; |
| 1439 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1440 | if (!addr) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1441 | return -ENODEV; |
| 1442 | |
| 1443 | info->io_cleanup = mem_cleanup; |
| 1444 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1445 | /* |
| 1446 | * Figure out the actual readb/readw/readl/etc routine to use based |
| 1447 | * upon the register size. |
| 1448 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1449 | switch (info->io.regsize) { |
| 1450 | case 1: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1451 | info->io.inputb = intf_mem_inb; |
| 1452 | info->io.outputb = intf_mem_outb; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1453 | break; |
| 1454 | case 2: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1455 | info->io.inputb = intf_mem_inw; |
| 1456 | info->io.outputb = intf_mem_outw; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1457 | break; |
| 1458 | case 4: |
Alexey Dobriyan | 546cfdf | 2006-02-03 03:04:40 -0800 | [diff] [blame] | 1459 | info->io.inputb = intf_mem_inl; |
| 1460 | info->io.outputb = intf_mem_outl; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1461 | break; |
| 1462 | #ifdef readq |
| 1463 | case 8: |
| 1464 | info->io.inputb = mem_inq; |
| 1465 | info->io.outputb = mem_outq; |
| 1466 | break; |
| 1467 | #endif |
| 1468 | default: |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1469 | printk(KERN_WARNING "ipmi_si: Invalid register size: %d\n", |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1470 | info->io.regsize); |
| 1471 | return -EINVAL; |
| 1472 | } |
| 1473 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1474 | /* |
| 1475 | * Calculate the total amount of memory to claim. This is an |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1476 | * unusual looking calculation, but it avoids claiming any |
| 1477 | * more memory than it has to. It will claim everything |
| 1478 | * between the first address to the end of the last full |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1479 | * register. |
| 1480 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1481 | mapsize = ((info->io_size * info->io.regspacing) |
| 1482 | - (info->io.regspacing - info->io.regsize)); |
| 1483 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1484 | if (request_mem_region(addr, mapsize, DEVICE_NAME) == NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1485 | return -EIO; |
| 1486 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1487 | info->io.addr = ioremap(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1488 | if (info->io.addr == NULL) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1489 | release_mem_region(addr, mapsize); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1490 | return -EIO; |
| 1491 | } |
| 1492 | return 0; |
| 1493 | } |
| 1494 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1495 | /* |
| 1496 | * Parms come in as <op1>[:op2[:op3...]]. ops are: |
| 1497 | * add|remove,kcs|bt|smic,mem|i/o,<address>[,<opt1>[,<opt2>[,...]]] |
| 1498 | * Options are: |
| 1499 | * rsp=<regspacing> |
| 1500 | * rsi=<regsize> |
| 1501 | * rsh=<regshift> |
| 1502 | * irq=<irq> |
| 1503 | * ipmb=<ipmb addr> |
| 1504 | */ |
| 1505 | enum hotmod_op { HM_ADD, HM_REMOVE }; |
| 1506 | struct hotmod_vals { |
| 1507 | char *name; |
| 1508 | int val; |
| 1509 | }; |
| 1510 | static struct hotmod_vals hotmod_ops[] = { |
| 1511 | { "add", HM_ADD }, |
| 1512 | { "remove", HM_REMOVE }, |
| 1513 | { NULL } |
| 1514 | }; |
| 1515 | static struct hotmod_vals hotmod_si[] = { |
| 1516 | { "kcs", SI_KCS }, |
| 1517 | { "smic", SI_SMIC }, |
| 1518 | { "bt", SI_BT }, |
| 1519 | { NULL } |
| 1520 | }; |
| 1521 | static struct hotmod_vals hotmod_as[] = { |
| 1522 | { "mem", IPMI_MEM_ADDR_SPACE }, |
| 1523 | { "i/o", IPMI_IO_ADDR_SPACE }, |
| 1524 | { NULL } |
| 1525 | }; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1526 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1527 | static int parse_str(struct hotmod_vals *v, int *val, char *name, char **curr) |
| 1528 | { |
| 1529 | char *s; |
| 1530 | int i; |
| 1531 | |
| 1532 | s = strchr(*curr, ','); |
| 1533 | if (!s) { |
| 1534 | printk(KERN_WARNING PFX "No hotmod %s given.\n", name); |
| 1535 | return -EINVAL; |
| 1536 | } |
| 1537 | *s = '\0'; |
| 1538 | s++; |
| 1539 | for (i = 0; hotmod_ops[i].name; i++) { |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1540 | if (strcmp(*curr, v[i].name) == 0) { |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1541 | *val = v[i].val; |
| 1542 | *curr = s; |
| 1543 | return 0; |
| 1544 | } |
| 1545 | } |
| 1546 | |
| 1547 | printk(KERN_WARNING PFX "Invalid hotmod %s '%s'\n", name, *curr); |
| 1548 | return -EINVAL; |
| 1549 | } |
| 1550 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1551 | static int check_hotmod_int_op(const char *curr, const char *option, |
| 1552 | const char *name, int *val) |
| 1553 | { |
| 1554 | char *n; |
| 1555 | |
| 1556 | if (strcmp(curr, name) == 0) { |
| 1557 | if (!option) { |
| 1558 | printk(KERN_WARNING PFX |
| 1559 | "No option given for '%s'\n", |
| 1560 | curr); |
| 1561 | return -EINVAL; |
| 1562 | } |
| 1563 | *val = simple_strtoul(option, &n, 0); |
| 1564 | if ((*n != '\0') || (*option == '\0')) { |
| 1565 | printk(KERN_WARNING PFX |
| 1566 | "Bad option given for '%s'\n", |
| 1567 | curr); |
| 1568 | return -EINVAL; |
| 1569 | } |
| 1570 | return 1; |
| 1571 | } |
| 1572 | return 0; |
| 1573 | } |
| 1574 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1575 | static int hotmod_handler(const char *val, struct kernel_param *kp) |
| 1576 | { |
| 1577 | char *str = kstrdup(val, GFP_KERNEL); |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1578 | int rv; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1579 | char *next, *curr, *s, *n, *o; |
| 1580 | enum hotmod_op op; |
| 1581 | enum si_type si_type; |
| 1582 | int addr_space; |
| 1583 | unsigned long addr; |
| 1584 | int regspacing; |
| 1585 | int regsize; |
| 1586 | int regshift; |
| 1587 | int irq; |
| 1588 | int ipmb; |
| 1589 | int ival; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1590 | int len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1591 | struct smi_info *info; |
| 1592 | |
| 1593 | if (!str) |
| 1594 | return -ENOMEM; |
| 1595 | |
| 1596 | /* Kill any trailing spaces, as we can get a "\n" from echo. */ |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1597 | len = strlen(str); |
| 1598 | ival = len - 1; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1599 | while ((ival >= 0) && isspace(str[ival])) { |
| 1600 | str[ival] = '\0'; |
| 1601 | ival--; |
| 1602 | } |
| 1603 | |
| 1604 | for (curr = str; curr; curr = next) { |
| 1605 | regspacing = 1; |
| 1606 | regsize = 1; |
| 1607 | regshift = 0; |
| 1608 | irq = 0; |
| 1609 | ipmb = 0x20; |
| 1610 | |
| 1611 | next = strchr(curr, ':'); |
| 1612 | if (next) { |
| 1613 | *next = '\0'; |
| 1614 | next++; |
| 1615 | } |
| 1616 | |
| 1617 | rv = parse_str(hotmod_ops, &ival, "operation", &curr); |
| 1618 | if (rv) |
| 1619 | break; |
| 1620 | op = ival; |
| 1621 | |
| 1622 | rv = parse_str(hotmod_si, &ival, "interface type", &curr); |
| 1623 | if (rv) |
| 1624 | break; |
| 1625 | si_type = ival; |
| 1626 | |
| 1627 | rv = parse_str(hotmod_as, &addr_space, "address space", &curr); |
| 1628 | if (rv) |
| 1629 | break; |
| 1630 | |
| 1631 | s = strchr(curr, ','); |
| 1632 | if (s) { |
| 1633 | *s = '\0'; |
| 1634 | s++; |
| 1635 | } |
| 1636 | addr = simple_strtoul(curr, &n, 0); |
| 1637 | if ((*n != '\0') || (*curr == '\0')) { |
| 1638 | printk(KERN_WARNING PFX "Invalid hotmod address" |
| 1639 | " '%s'\n", curr); |
| 1640 | break; |
| 1641 | } |
| 1642 | |
| 1643 | while (s) { |
| 1644 | curr = s; |
| 1645 | s = strchr(curr, ','); |
| 1646 | if (s) { |
| 1647 | *s = '\0'; |
| 1648 | s++; |
| 1649 | } |
| 1650 | o = strchr(curr, '='); |
| 1651 | if (o) { |
| 1652 | *o = '\0'; |
| 1653 | o++; |
| 1654 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1655 | rv = check_hotmod_int_op(curr, o, "rsp", ®spacing); |
| 1656 | if (rv < 0) |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1657 | goto out; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1658 | else if (rv) |
| 1659 | continue; |
| 1660 | rv = check_hotmod_int_op(curr, o, "rsi", ®size); |
| 1661 | if (rv < 0) |
| 1662 | goto out; |
| 1663 | else if (rv) |
| 1664 | continue; |
| 1665 | rv = check_hotmod_int_op(curr, o, "rsh", ®shift); |
| 1666 | if (rv < 0) |
| 1667 | goto out; |
| 1668 | else if (rv) |
| 1669 | continue; |
| 1670 | rv = check_hotmod_int_op(curr, o, "irq", &irq); |
| 1671 | if (rv < 0) |
| 1672 | goto out; |
| 1673 | else if (rv) |
| 1674 | continue; |
| 1675 | rv = check_hotmod_int_op(curr, o, "ipmb", &ipmb); |
| 1676 | if (rv < 0) |
| 1677 | goto out; |
| 1678 | else if (rv) |
| 1679 | continue; |
| 1680 | |
| 1681 | rv = -EINVAL; |
| 1682 | printk(KERN_WARNING PFX |
| 1683 | "Invalid hotmod option '%s'\n", |
| 1684 | curr); |
| 1685 | goto out; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1686 | } |
| 1687 | |
| 1688 | if (op == HM_ADD) { |
| 1689 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1690 | if (!info) { |
| 1691 | rv = -ENOMEM; |
| 1692 | goto out; |
| 1693 | } |
| 1694 | |
| 1695 | info->addr_source = "hotmod"; |
| 1696 | info->si_type = si_type; |
| 1697 | info->io.addr_data = addr; |
| 1698 | info->io.addr_type = addr_space; |
| 1699 | if (addr_space == IPMI_MEM_ADDR_SPACE) |
| 1700 | info->io_setup = mem_setup; |
| 1701 | else |
| 1702 | info->io_setup = port_setup; |
| 1703 | |
| 1704 | info->io.addr = NULL; |
| 1705 | info->io.regspacing = regspacing; |
| 1706 | if (!info->io.regspacing) |
| 1707 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1708 | info->io.regsize = regsize; |
| 1709 | if (!info->io.regsize) |
| 1710 | info->io.regsize = DEFAULT_REGSPACING; |
| 1711 | info->io.regshift = regshift; |
| 1712 | info->irq = irq; |
| 1713 | if (info->irq) |
| 1714 | info->irq_setup = std_irq_setup; |
| 1715 | info->slave_addr = ipmb; |
| 1716 | |
| 1717 | try_smi_init(info); |
| 1718 | } else { |
| 1719 | /* remove */ |
| 1720 | struct smi_info *e, *tmp_e; |
| 1721 | |
| 1722 | mutex_lock(&smi_infos_lock); |
| 1723 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) { |
| 1724 | if (e->io.addr_type != addr_space) |
| 1725 | continue; |
| 1726 | if (e->si_type != si_type) |
| 1727 | continue; |
| 1728 | if (e->io.addr_data == addr) |
| 1729 | cleanup_one_si(e); |
| 1730 | } |
| 1731 | mutex_unlock(&smi_infos_lock); |
| 1732 | } |
| 1733 | } |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1734 | rv = len; |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 1735 | out: |
| 1736 | kfree(str); |
| 1737 | return rv; |
| 1738 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1739 | |
| 1740 | static __devinit void hardcode_find_bmc(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1741 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1742 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1743 | struct smi_info *info; |
| 1744 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1745 | for (i = 0; i < SI_MAX_PARMS; i++) { |
| 1746 | if (!ports[i] && !addrs[i]) |
| 1747 | continue; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1748 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1749 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1750 | if (!info) |
| 1751 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1752 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1753 | info->addr_source = "hardcoded"; |
| 1754 | |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1755 | if (!si_type[i] || strcmp(si_type[i], "kcs") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1756 | info->si_type = SI_KCS; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1757 | } else if (strcmp(si_type[i], "smic") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1758 | info->si_type = SI_SMIC; |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 1759 | } else if (strcmp(si_type[i], "bt") == 0) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1760 | info->si_type = SI_BT; |
| 1761 | } else { |
| 1762 | printk(KERN_WARNING |
| 1763 | "ipmi_si: Interface type specified " |
| 1764 | "for interface %d, was invalid: %s\n", |
| 1765 | i, si_type[i]); |
| 1766 | kfree(info); |
| 1767 | continue; |
| 1768 | } |
| 1769 | |
| 1770 | if (ports[i]) { |
| 1771 | /* An I/O port */ |
| 1772 | info->io_setup = port_setup; |
| 1773 | info->io.addr_data = ports[i]; |
| 1774 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 1775 | } else if (addrs[i]) { |
| 1776 | /* A memory port */ |
| 1777 | info->io_setup = mem_setup; |
| 1778 | info->io.addr_data = addrs[i]; |
| 1779 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 1780 | } else { |
| 1781 | printk(KERN_WARNING |
| 1782 | "ipmi_si: Interface type specified " |
| 1783 | "for interface %d, " |
| 1784 | "but port and address were not set or " |
| 1785 | "set to zero.\n", i); |
| 1786 | kfree(info); |
| 1787 | continue; |
| 1788 | } |
| 1789 | |
| 1790 | info->io.addr = NULL; |
| 1791 | info->io.regspacing = regspacings[i]; |
| 1792 | if (!info->io.regspacing) |
| 1793 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1794 | info->io.regsize = regsizes[i]; |
| 1795 | if (!info->io.regsize) |
| 1796 | info->io.regsize = DEFAULT_REGSPACING; |
| 1797 | info->io.regshift = regshifts[i]; |
| 1798 | info->irq = irqs[i]; |
| 1799 | if (info->irq) |
| 1800 | info->irq_setup = std_irq_setup; |
| 1801 | |
| 1802 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1803 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1804 | } |
| 1805 | |
Len Brown | 8466361 | 2005-08-24 12:09:07 -0400 | [diff] [blame] | 1806 | #ifdef CONFIG_ACPI |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1807 | |
| 1808 | #include <linux/acpi.h> |
| 1809 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1810 | /* |
| 1811 | * Once we get an ACPI failure, we don't try any more, because we go |
| 1812 | * through the tables sequentially. Once we don't find a table, there |
| 1813 | * are no more. |
| 1814 | */ |
Randy Dunlap | 0c8204b | 2006-12-10 02:19:06 -0800 | [diff] [blame] | 1815 | static int acpi_failure; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1816 | |
| 1817 | /* For GPE-type interrupts. */ |
| 1818 | static u32 ipmi_acpi_gpe(void *context) |
| 1819 | { |
| 1820 | struct smi_info *smi_info = context; |
| 1821 | unsigned long flags; |
| 1822 | #ifdef DEBUG_TIMING |
| 1823 | struct timeval t; |
| 1824 | #endif |
| 1825 | |
| 1826 | spin_lock_irqsave(&(smi_info->si_lock), flags); |
| 1827 | |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 1828 | smi_inc_stat(smi_info, interrupts); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1829 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | #ifdef DEBUG_TIMING |
| 1831 | do_gettimeofday(&t); |
| 1832 | printk("**ACPI_GPE: %d.%9.9d\n", t.tv_sec, t.tv_usec); |
| 1833 | #endif |
| 1834 | smi_event_handler(smi_info, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1835 | spin_unlock_irqrestore(&(smi_info->si_lock), flags); |
| 1836 | |
| 1837 | return ACPI_INTERRUPT_HANDLED; |
| 1838 | } |
| 1839 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1840 | static void acpi_gpe_irq_cleanup(struct smi_info *info) |
| 1841 | { |
| 1842 | if (!info->irq) |
| 1843 | return; |
| 1844 | |
| 1845 | acpi_remove_gpe_handler(NULL, info->irq, &ipmi_acpi_gpe); |
| 1846 | } |
| 1847 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1848 | static int acpi_gpe_irq_setup(struct smi_info *info) |
| 1849 | { |
| 1850 | acpi_status status; |
| 1851 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1852 | if (!info->irq) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | return 0; |
| 1854 | |
| 1855 | /* FIXME - is level triggered right? */ |
| 1856 | status = acpi_install_gpe_handler(NULL, |
| 1857 | info->irq, |
| 1858 | ACPI_GPE_LEVEL_TRIGGERED, |
| 1859 | &ipmi_acpi_gpe, |
| 1860 | info); |
| 1861 | if (status != AE_OK) { |
| 1862 | printk(KERN_WARNING |
| 1863 | "ipmi_si: %s unable to claim ACPI GPE %d," |
| 1864 | " running polled\n", |
| 1865 | DEVICE_NAME, info->irq); |
| 1866 | info->irq = 0; |
| 1867 | return -EINVAL; |
| 1868 | } else { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1869 | info->irq_cleanup = acpi_gpe_irq_cleanup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1870 | printk(" Using ACPI GPE %d\n", info->irq); |
| 1871 | return 0; |
| 1872 | } |
| 1873 | } |
| 1874 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1875 | /* |
| 1876 | * Defined at |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1877 | * http://h21007.www2.hp.com/dspp/files/unprotected/devresource/ |
| 1878 | * Docs/TechPapers/IA64/hpspmi.pdf |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1879 | */ |
| 1880 | struct SPMITable { |
| 1881 | s8 Signature[4]; |
| 1882 | u32 Length; |
| 1883 | u8 Revision; |
| 1884 | u8 Checksum; |
| 1885 | s8 OEMID[6]; |
| 1886 | s8 OEMTableID[8]; |
| 1887 | s8 OEMRevision[4]; |
| 1888 | s8 CreatorID[4]; |
| 1889 | s8 CreatorRevision[4]; |
| 1890 | u8 InterfaceType; |
| 1891 | u8 IPMIlegacy; |
| 1892 | s16 SpecificationRevision; |
| 1893 | |
| 1894 | /* |
| 1895 | * Bit 0 - SCI interrupt supported |
| 1896 | * Bit 1 - I/O APIC/SAPIC |
| 1897 | */ |
| 1898 | u8 InterruptType; |
| 1899 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1900 | /* |
| 1901 | * If bit 0 of InterruptType is set, then this is the SCI |
| 1902 | * interrupt in the GPEx_STS register. |
| 1903 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1904 | u8 GPE; |
| 1905 | |
| 1906 | s16 Reserved; |
| 1907 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1908 | /* |
| 1909 | * If bit 1 of InterruptType is set, then this is the I/O |
| 1910 | * APIC/SAPIC interrupt. |
| 1911 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1912 | u32 GlobalSystemInterrupt; |
| 1913 | |
| 1914 | /* The actual register address. */ |
| 1915 | struct acpi_generic_address addr; |
| 1916 | |
| 1917 | u8 UID[4]; |
| 1918 | |
| 1919 | s8 spmi_id[1]; /* A '\0' terminated array starts here. */ |
| 1920 | }; |
| 1921 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1922 | static __devinit int try_init_acpi(struct SPMITable *spmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1923 | { |
| 1924 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1925 | u8 addr_space; |
| 1926 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1927 | if (spmi->IPMIlegacy != 1) { |
| 1928 | printk(KERN_INFO "IPMI: Bad SPMI legacy %d\n", spmi->IPMIlegacy); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1929 | return -ENODEV; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1930 | } |
| 1931 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1932 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1933 | addr_space = IPMI_MEM_ADDR_SPACE; |
| 1934 | else |
| 1935 | addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1936 | |
| 1937 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 1938 | if (!info) { |
| 1939 | printk(KERN_ERR "ipmi_si: Could not allocate SI data (3)\n"); |
| 1940 | return -ENOMEM; |
| 1941 | } |
| 1942 | |
| 1943 | info->addr_source = "ACPI"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1944 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1945 | /* Figure out the interface type. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1946 | switch (spmi->InterfaceType) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1947 | case 1: /* KCS */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1948 | info->si_type = SI_KCS; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1950 | case 2: /* SMIC */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1951 | info->si_type = SI_SMIC; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1952 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1953 | case 3: /* BT */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1954 | info->si_type = SI_BT; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1955 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1956 | default: |
| 1957 | printk(KERN_INFO "ipmi_si: Unknown ACPI/SPMI SI type %d\n", |
| 1958 | spmi->InterfaceType); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1959 | kfree(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1960 | return -EIO; |
| 1961 | } |
| 1962 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1963 | if (spmi->InterruptType & 1) { |
| 1964 | /* We've got a GPE interrupt. */ |
| 1965 | info->irq = spmi->GPE; |
| 1966 | info->irq_setup = acpi_gpe_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1967 | } else if (spmi->InterruptType & 2) { |
| 1968 | /* We've got an APIC/SAPIC interrupt. */ |
| 1969 | info->irq = spmi->GlobalSystemInterrupt; |
| 1970 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1971 | } else { |
| 1972 | /* Use the default interrupt setting. */ |
| 1973 | info->irq = 0; |
| 1974 | info->irq_setup = NULL; |
| 1975 | } |
| 1976 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1977 | if (spmi->addr.bit_width) { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1978 | /* A (hopefully) properly formed register bit width. */ |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1979 | info->io.regspacing = spmi->addr.bit_width / 8; |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1980 | } else { |
Corey Minyard | 35bc37a | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 1981 | info->io.regspacing = DEFAULT_REGSPACING; |
| 1982 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1983 | info->io.regsize = info->io.regspacing; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1984 | info->io.regshift = spmi->addr.bit_offset; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1985 | |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1986 | if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1987 | info->io_setup = mem_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 1988 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 1989 | } else if (spmi->addr.space_id == ACPI_ADR_SPACE_SYSTEM_IO) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1990 | info->io_setup = port_setup; |
Corey Minyard | 8fe1425 | 2007-05-12 10:36:58 -0700 | [diff] [blame] | 1991 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1992 | } else { |
| 1993 | kfree(info); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 1994 | printk(KERN_WARNING |
| 1995 | "ipmi_si: Unknown ACPI I/O Address type\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1996 | return -EIO; |
| 1997 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 1998 | info->io.addr_data = spmi->addr.address; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1999 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2000 | try_smi_init(info); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2001 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2002 | return 0; |
| 2003 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2004 | |
| 2005 | static __devinit void acpi_find_bmc(void) |
| 2006 | { |
| 2007 | acpi_status status; |
| 2008 | struct SPMITable *spmi; |
| 2009 | int i; |
| 2010 | |
| 2011 | if (acpi_disabled) |
| 2012 | return; |
| 2013 | |
| 2014 | if (acpi_failure) |
| 2015 | return; |
| 2016 | |
| 2017 | for (i = 0; ; i++) { |
Alexey Starikovskiy | 15a58ed | 2007-02-02 19:48:22 +0300 | [diff] [blame] | 2018 | status = acpi_get_table(ACPI_SIG_SPMI, i+1, |
| 2019 | (struct acpi_table_header **)&spmi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2020 | if (status != AE_OK) |
| 2021 | return; |
| 2022 | |
| 2023 | try_init_acpi(spmi); |
| 2024 | } |
| 2025 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2026 | #endif |
| 2027 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2028 | #ifdef CONFIG_DMI |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2029 | struct dmi_ipmi_data { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2030 | u8 type; |
| 2031 | u8 addr_space; |
| 2032 | unsigned long base_addr; |
| 2033 | u8 irq; |
| 2034 | u8 offset; |
| 2035 | u8 slave_addr; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2036 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2037 | |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2038 | static int __devinit decode_dmi(const struct dmi_header *dm, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2039 | struct dmi_ipmi_data *dmi) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2040 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2041 | const u8 *data = (const u8 *)dm; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2042 | unsigned long base_addr; |
| 2043 | u8 reg_spacing; |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2044 | u8 len = dm->length; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2045 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2046 | dmi->type = data[4]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2047 | |
| 2048 | memcpy(&base_addr, data+8, sizeof(unsigned long)); |
| 2049 | if (len >= 0x11) { |
| 2050 | if (base_addr & 1) { |
| 2051 | /* I/O */ |
| 2052 | base_addr &= 0xFFFE; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2053 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2054 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2055 | /* Memory */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2056 | dmi->addr_space = IPMI_MEM_ADDR_SPACE; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2057 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2058 | /* If bit 4 of byte 0x10 is set, then the lsb for the address |
| 2059 | is odd. */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2060 | dmi->base_addr = base_addr | ((data[0x10] & 0x10) >> 4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2061 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2062 | dmi->irq = data[0x11]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2063 | |
| 2064 | /* The top two bits of byte 0x10 hold the register spacing. */ |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 2065 | reg_spacing = (data[0x10] & 0xC0) >> 6; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2066 | switch (reg_spacing) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2067 | case 0x00: /* Byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2068 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2069 | break; |
| 2070 | case 0x01: /* 32-bit boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2071 | dmi->offset = 4; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2072 | break; |
| 2073 | case 0x02: /* 16-byte boundaries */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2074 | dmi->offset = 16; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2075 | break; |
| 2076 | default: |
| 2077 | /* Some other interface, just ignore it. */ |
| 2078 | return -EIO; |
| 2079 | } |
| 2080 | } else { |
| 2081 | /* Old DMI spec. */ |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2082 | /* |
| 2083 | * Note that technically, the lower bit of the base |
Corey Minyard | 9206880 | 2005-05-01 08:59:10 -0700 | [diff] [blame] | 2084 | * address should be 1 if the address is I/O and 0 if |
| 2085 | * the address is in memory. So many systems get that |
| 2086 | * wrong (and all that I have seen are I/O) so we just |
| 2087 | * ignore that bit and assume I/O. Systems that use |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2088 | * memory should use the newer spec, anyway. |
| 2089 | */ |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2090 | dmi->base_addr = base_addr & 0xfffe; |
| 2091 | dmi->addr_space = IPMI_IO_ADDR_SPACE; |
| 2092 | dmi->offset = 1; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2093 | } |
| 2094 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2095 | dmi->slave_addr = data[6]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2096 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2097 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2098 | } |
| 2099 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2100 | static __devinit void try_init_dmi(struct dmi_ipmi_data *ipmi_data) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2101 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2102 | struct smi_info *info; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2103 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2104 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2105 | if (!info) { |
| 2106 | printk(KERN_ERR |
| 2107 | "ipmi_si: Could not allocate SI data\n"); |
| 2108 | return; |
| 2109 | } |
| 2110 | |
| 2111 | info->addr_source = "SMBIOS"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2112 | |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2113 | switch (ipmi_data->type) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2114 | case 0x01: /* KCS */ |
| 2115 | info->si_type = SI_KCS; |
| 2116 | break; |
| 2117 | case 0x02: /* SMIC */ |
| 2118 | info->si_type = SI_SMIC; |
| 2119 | break; |
| 2120 | case 0x03: /* BT */ |
| 2121 | info->si_type = SI_BT; |
| 2122 | break; |
| 2123 | default: |
Jesper Juhl | 80cd692 | 2007-07-31 00:39:05 -0700 | [diff] [blame] | 2124 | kfree(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2125 | return; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2126 | } |
| 2127 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2128 | switch (ipmi_data->addr_space) { |
| 2129 | case IPMI_MEM_ADDR_SPACE: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2130 | info->io_setup = mem_setup; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2131 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2132 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2133 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2134 | case IPMI_IO_ADDR_SPACE: |
| 2135 | info->io_setup = port_setup; |
| 2136 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2137 | break; |
| 2138 | |
| 2139 | default: |
| 2140 | kfree(info); |
| 2141 | printk(KERN_WARNING |
| 2142 | "ipmi_si: Unknown SMBIOS I/O Address type: %d.\n", |
| 2143 | ipmi_data->addr_space); |
| 2144 | return; |
| 2145 | } |
| 2146 | info->io.addr_data = ipmi_data->base_addr; |
| 2147 | |
| 2148 | info->io.regspacing = ipmi_data->offset; |
| 2149 | if (!info->io.regspacing) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2150 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2151 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2152 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2153 | |
| 2154 | info->slave_addr = ipmi_data->slave_addr; |
| 2155 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2156 | info->irq = ipmi_data->irq; |
| 2157 | if (info->irq) |
| 2158 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2159 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2160 | try_smi_init(info); |
| 2161 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2162 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2163 | static void __devinit dmi_find_bmc(void) |
| 2164 | { |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2165 | const struct dmi_device *dev = NULL; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2166 | struct dmi_ipmi_data data; |
| 2167 | int rv; |
| 2168 | |
| 2169 | while ((dev = dmi_find_device(DMI_DEV_TYPE_IPMI, NULL, dev))) { |
Jeff Garzik | 397f4eb | 2006-10-03 01:13:52 -0700 | [diff] [blame] | 2170 | memset(&data, 0, sizeof(data)); |
Jeff Garzik | 1855256 | 2007-10-03 15:15:40 -0400 | [diff] [blame] | 2171 | rv = decode_dmi((const struct dmi_header *) dev->device_data, |
| 2172 | &data); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2173 | if (!rv) |
| 2174 | try_init_dmi(&data); |
| 2175 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2176 | } |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 2177 | #endif /* CONFIG_DMI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2178 | |
| 2179 | #ifdef CONFIG_PCI |
| 2180 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2181 | #define PCI_ERMC_CLASSCODE 0x0C0700 |
| 2182 | #define PCI_ERMC_CLASSCODE_MASK 0xffffff00 |
| 2183 | #define PCI_ERMC_CLASSCODE_TYPE_MASK 0xff |
| 2184 | #define PCI_ERMC_CLASSCODE_TYPE_SMIC 0x00 |
| 2185 | #define PCI_ERMC_CLASSCODE_TYPE_KCS 0x01 |
| 2186 | #define PCI_ERMC_CLASSCODE_TYPE_BT 0x02 |
| 2187 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2188 | #define PCI_HP_VENDOR_ID 0x103C |
| 2189 | #define PCI_MMC_DEVICE_ID 0x121A |
| 2190 | #define PCI_MMC_ADDR_CW 0x10 |
| 2191 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2192 | static void ipmi_pci_cleanup(struct smi_info *info) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2193 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2194 | struct pci_dev *pdev = info->addr_source_data; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2195 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2196 | pci_disable_device(pdev); |
| 2197 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2198 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2199 | static int __devinit ipmi_pci_probe(struct pci_dev *pdev, |
| 2200 | const struct pci_device_id *ent) |
| 2201 | { |
| 2202 | int rv; |
| 2203 | int class_type = pdev->class & PCI_ERMC_CLASSCODE_TYPE_MASK; |
| 2204 | struct smi_info *info; |
| 2205 | int first_reg_offset = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2206 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2207 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2208 | if (!info) |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2209 | return -ENOMEM; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2210 | |
| 2211 | info->addr_source = "PCI"; |
| 2212 | |
| 2213 | switch (class_type) { |
| 2214 | case PCI_ERMC_CLASSCODE_TYPE_SMIC: |
| 2215 | info->si_type = SI_SMIC; |
| 2216 | break; |
| 2217 | |
| 2218 | case PCI_ERMC_CLASSCODE_TYPE_KCS: |
| 2219 | info->si_type = SI_KCS; |
| 2220 | break; |
| 2221 | |
| 2222 | case PCI_ERMC_CLASSCODE_TYPE_BT: |
| 2223 | info->si_type = SI_BT; |
| 2224 | break; |
| 2225 | |
| 2226 | default: |
| 2227 | kfree(info); |
| 2228 | printk(KERN_INFO "ipmi_si: %s: Unknown IPMI type: %d\n", |
| 2229 | pci_name(pdev), class_type); |
Dave Jones | 1cd441f | 2006-10-19 23:29:09 -0700 | [diff] [blame] | 2230 | return -ENOMEM; |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2231 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2232 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2233 | rv = pci_enable_device(pdev); |
| 2234 | if (rv) { |
| 2235 | printk(KERN_ERR "ipmi_si: %s: couldn't enable PCI device\n", |
| 2236 | pci_name(pdev)); |
| 2237 | kfree(info); |
| 2238 | return rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2239 | } |
| 2240 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2241 | info->addr_source_cleanup = ipmi_pci_cleanup; |
| 2242 | info->addr_source_data = pdev; |
| 2243 | |
| 2244 | if (pdev->subsystem_vendor == PCI_HP_VENDOR_ID) |
| 2245 | first_reg_offset = 1; |
| 2246 | |
| 2247 | if (pci_resource_flags(pdev, 0) & IORESOURCE_IO) { |
| 2248 | info->io_setup = port_setup; |
| 2249 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2250 | } else { |
| 2251 | info->io_setup = mem_setup; |
| 2252 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2253 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2254 | info->io.addr_data = pci_resource_start(pdev, 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2255 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2256 | info->io.regspacing = DEFAULT_REGSPACING; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2257 | info->io.regsize = DEFAULT_REGSPACING; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2258 | info->io.regshift = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2259 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2260 | info->irq = pdev->irq; |
| 2261 | if (info->irq) |
| 2262 | info->irq_setup = std_irq_setup; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2263 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2264 | info->dev = &pdev->dev; |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2265 | pci_set_drvdata(pdev, info); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2266 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2267 | return try_smi_init(info); |
| 2268 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2269 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2270 | static void __devexit ipmi_pci_remove(struct pci_dev *pdev) |
| 2271 | { |
Corey Minyard | fca3b74 | 2007-05-08 00:23:59 -0700 | [diff] [blame] | 2272 | struct smi_info *info = pci_get_drvdata(pdev); |
| 2273 | cleanup_one_si(info); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2274 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2275 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2276 | #ifdef CONFIG_PM |
| 2277 | static int ipmi_pci_suspend(struct pci_dev *pdev, pm_message_t state) |
| 2278 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2279 | return 0; |
| 2280 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2281 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2282 | static int ipmi_pci_resume(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2283 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2284 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2285 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2286 | #endif |
| 2287 | |
| 2288 | static struct pci_device_id ipmi_pci_devices[] = { |
| 2289 | { PCI_DEVICE(PCI_HP_VENDOR_ID, PCI_MMC_DEVICE_ID) }, |
Kees Cook | 248bdd5 | 2007-09-18 22:46:32 -0700 | [diff] [blame] | 2290 | { PCI_DEVICE_CLASS(PCI_ERMC_CLASSCODE, PCI_ERMC_CLASSCODE_MASK) }, |
| 2291 | { 0, } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2292 | }; |
| 2293 | MODULE_DEVICE_TABLE(pci, ipmi_pci_devices); |
| 2294 | |
| 2295 | static struct pci_driver ipmi_pci_driver = { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2296 | .name = DEVICE_NAME, |
| 2297 | .id_table = ipmi_pci_devices, |
| 2298 | .probe = ipmi_pci_probe, |
| 2299 | .remove = __devexit_p(ipmi_pci_remove), |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2300 | #ifdef CONFIG_PM |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2301 | .suspend = ipmi_pci_suspend, |
| 2302 | .resume = ipmi_pci_resume, |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2303 | #endif |
| 2304 | }; |
| 2305 | #endif /* CONFIG_PCI */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2306 | |
| 2307 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2308 | #ifdef CONFIG_PPC_OF |
| 2309 | static int __devinit ipmi_of_probe(struct of_device *dev, |
| 2310 | const struct of_device_id *match) |
| 2311 | { |
| 2312 | struct smi_info *info; |
| 2313 | struct resource resource; |
| 2314 | const int *regsize, *regspacing, *regshift; |
| 2315 | struct device_node *np = dev->node; |
| 2316 | int ret; |
| 2317 | int proplen; |
| 2318 | |
| 2319 | dev_info(&dev->dev, PFX "probing via device tree\n"); |
| 2320 | |
| 2321 | ret = of_address_to_resource(np, 0, &resource); |
| 2322 | if (ret) { |
| 2323 | dev_warn(&dev->dev, PFX "invalid address from OF\n"); |
| 2324 | return ret; |
| 2325 | } |
| 2326 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2327 | regsize = of_get_property(np, "reg-size", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2328 | if (regsize && proplen != 4) { |
| 2329 | dev_warn(&dev->dev, PFX "invalid regsize from OF\n"); |
| 2330 | return -EINVAL; |
| 2331 | } |
| 2332 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2333 | regspacing = of_get_property(np, "reg-spacing", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2334 | if (regspacing && proplen != 4) { |
| 2335 | dev_warn(&dev->dev, PFX "invalid regspacing from OF\n"); |
| 2336 | return -EINVAL; |
| 2337 | } |
| 2338 | |
Stephen Rothwell | 9c25099 | 2007-08-15 16:42:12 +1000 | [diff] [blame] | 2339 | regshift = of_get_property(np, "reg-shift", &proplen); |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2340 | if (regshift && proplen != 4) { |
| 2341 | dev_warn(&dev->dev, PFX "invalid regshift from OF\n"); |
| 2342 | return -EINVAL; |
| 2343 | } |
| 2344 | |
| 2345 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2346 | |
| 2347 | if (!info) { |
| 2348 | dev_err(&dev->dev, |
| 2349 | PFX "could not allocate memory for OF probe\n"); |
| 2350 | return -ENOMEM; |
| 2351 | } |
| 2352 | |
| 2353 | info->si_type = (enum si_type) match->data; |
| 2354 | info->addr_source = "device-tree"; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2355 | info->irq_setup = std_irq_setup; |
| 2356 | |
Nate Case | 3b7ec11 | 2008-05-14 16:05:39 -0700 | [diff] [blame] | 2357 | if (resource.flags & IORESOURCE_IO) { |
| 2358 | info->io_setup = port_setup; |
| 2359 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2360 | } else { |
| 2361 | info->io_setup = mem_setup; |
| 2362 | info->io.addr_type = IPMI_MEM_ADDR_SPACE; |
| 2363 | } |
| 2364 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2365 | info->io.addr_data = resource.start; |
| 2366 | |
| 2367 | info->io.regsize = regsize ? *regsize : DEFAULT_REGSIZE; |
| 2368 | info->io.regspacing = regspacing ? *regspacing : DEFAULT_REGSPACING; |
| 2369 | info->io.regshift = regshift ? *regshift : 0; |
| 2370 | |
| 2371 | info->irq = irq_of_parse_and_map(dev->node, 0); |
| 2372 | info->dev = &dev->dev; |
| 2373 | |
Mijo Safradin | 32d2198 | 2007-08-22 14:01:48 -0700 | [diff] [blame] | 2374 | dev_dbg(&dev->dev, "addr 0x%lx regsize %d spacing %d irq %x\n", |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2375 | info->io.addr_data, info->io.regsize, info->io.regspacing, |
| 2376 | info->irq); |
| 2377 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2378 | dev->dev.driver_data = (void *) info; |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2379 | |
| 2380 | return try_smi_init(info); |
| 2381 | } |
| 2382 | |
| 2383 | static int __devexit ipmi_of_remove(struct of_device *dev) |
| 2384 | { |
| 2385 | cleanup_one_si(dev->dev.driver_data); |
| 2386 | return 0; |
| 2387 | } |
| 2388 | |
| 2389 | static struct of_device_id ipmi_match[] = |
| 2390 | { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2391 | { .type = "ipmi", .compatible = "ipmi-kcs", |
| 2392 | .data = (void *)(unsigned long) SI_KCS }, |
| 2393 | { .type = "ipmi", .compatible = "ipmi-smic", |
| 2394 | .data = (void *)(unsigned long) SI_SMIC }, |
| 2395 | { .type = "ipmi", .compatible = "ipmi-bt", |
| 2396 | .data = (void *)(unsigned long) SI_BT }, |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2397 | {}, |
| 2398 | }; |
| 2399 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2400 | static struct of_platform_driver ipmi_of_platform_driver = { |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 2401 | .name = "ipmi", |
| 2402 | .match_table = ipmi_match, |
| 2403 | .probe = ipmi_of_probe, |
| 2404 | .remove = __devexit_p(ipmi_of_remove), |
| 2405 | }; |
| 2406 | #endif /* CONFIG_PPC_OF */ |
| 2407 | |
| 2408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2409 | static int try_get_dev_id(struct smi_info *smi_info) |
| 2410 | { |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2411 | unsigned char msg[2]; |
| 2412 | unsigned char *resp; |
| 2413 | unsigned long resp_len; |
| 2414 | enum si_sm_result smi_result; |
| 2415 | int rv = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2416 | |
| 2417 | resp = kmalloc(IPMI_MAX_MSG_LENGTH, GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2418 | if (!resp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2419 | return -ENOMEM; |
| 2420 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2421 | /* |
| 2422 | * Do a Get Device ID command, since it comes back with some |
| 2423 | * useful info. |
| 2424 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2425 | msg[0] = IPMI_NETFN_APP_REQUEST << 2; |
| 2426 | msg[1] = IPMI_GET_DEVICE_ID_CMD; |
| 2427 | smi_info->handlers->start_transaction(smi_info->si_sm, msg, 2); |
| 2428 | |
| 2429 | smi_result = smi_info->handlers->event(smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2430 | for (;;) { |
Corey Minyard | c3e7e79 | 2005-11-07 01:00:02 -0800 | [diff] [blame] | 2431 | if (smi_result == SI_SM_CALL_WITH_DELAY || |
| 2432 | smi_result == SI_SM_CALL_WITH_TICK_DELAY) { |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 2433 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2434 | smi_result = smi_info->handlers->event( |
| 2435 | smi_info->si_sm, 100); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2436 | } else if (smi_result == SI_SM_CALL_WITHOUT_DELAY) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2437 | smi_result = smi_info->handlers->event( |
| 2438 | smi_info->si_sm, 0); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2439 | } else |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2440 | break; |
| 2441 | } |
| 2442 | if (smi_result == SI_SM_HOSED) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2443 | /* |
| 2444 | * We couldn't get the state machine to run, so whatever's at |
| 2445 | * the port is probably not an IPMI SMI interface. |
| 2446 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2447 | rv = -ENODEV; |
| 2448 | goto out; |
| 2449 | } |
| 2450 | |
| 2451 | /* Otherwise, we got some data. */ |
| 2452 | resp_len = smi_info->handlers->get_result(smi_info->si_sm, |
| 2453 | resp, IPMI_MAX_MSG_LENGTH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2454 | |
Corey Minyard | d8c9861 | 2007-10-18 03:07:11 -0700 | [diff] [blame] | 2455 | /* Check and record info from the get device id, in case we need it. */ |
| 2456 | rv = ipmi_demangle_device_id(resp, resp_len, &smi_info->device_id); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2457 | |
| 2458 | out: |
| 2459 | kfree(resp); |
| 2460 | return rv; |
| 2461 | } |
| 2462 | |
| 2463 | static int type_file_read_proc(char *page, char **start, off_t off, |
| 2464 | int count, int *eof, void *data) |
| 2465 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2466 | struct smi_info *smi = data; |
| 2467 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2468 | return sprintf(page, "%s\n", si_to_str[smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2469 | } |
| 2470 | |
| 2471 | static int stat_file_read_proc(char *page, char **start, off_t off, |
| 2472 | int count, int *eof, void *data) |
| 2473 | { |
| 2474 | char *out = (char *) page; |
| 2475 | struct smi_info *smi = data; |
| 2476 | |
| 2477 | out += sprintf(out, "interrupts_enabled: %d\n", |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2478 | smi->irq && !smi->interrupt_disabled); |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2479 | out += sprintf(out, "short_timeouts: %u\n", |
| 2480 | smi_get_stat(smi, short_timeouts)); |
| 2481 | out += sprintf(out, "long_timeouts: %u\n", |
| 2482 | smi_get_stat(smi, long_timeouts)); |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2483 | out += sprintf(out, "idles: %u\n", |
| 2484 | smi_get_stat(smi, idles)); |
| 2485 | out += sprintf(out, "interrupts: %u\n", |
| 2486 | smi_get_stat(smi, interrupts)); |
| 2487 | out += sprintf(out, "attentions: %u\n", |
| 2488 | smi_get_stat(smi, attentions)); |
| 2489 | out += sprintf(out, "flag_fetches: %u\n", |
| 2490 | smi_get_stat(smi, flag_fetches)); |
| 2491 | out += sprintf(out, "hosed_count: %u\n", |
| 2492 | smi_get_stat(smi, hosed_count)); |
| 2493 | out += sprintf(out, "complete_transactions: %u\n", |
| 2494 | smi_get_stat(smi, complete_transactions)); |
| 2495 | out += sprintf(out, "events: %u\n", |
| 2496 | smi_get_stat(smi, events)); |
| 2497 | out += sprintf(out, "watchdog_pretimeouts: %u\n", |
| 2498 | smi_get_stat(smi, watchdog_pretimeouts)); |
| 2499 | out += sprintf(out, "incoming_messages: %u\n", |
| 2500 | smi_get_stat(smi, incoming_messages)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2501 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2502 | return out - page; |
| 2503 | } |
| 2504 | |
| 2505 | static int param_read_proc(char *page, char **start, off_t off, |
| 2506 | int count, int *eof, void *data) |
| 2507 | { |
| 2508 | struct smi_info *smi = data; |
| 2509 | |
| 2510 | return sprintf(page, |
| 2511 | "%s,%s,0x%lx,rsp=%d,rsi=%d,rsh=%d,irq=%d,ipmb=%d\n", |
| 2512 | si_to_str[smi->si_type], |
| 2513 | addr_space_to_str[smi->io.addr_type], |
| 2514 | smi->io.addr_data, |
| 2515 | smi->io.regspacing, |
| 2516 | smi->io.regsize, |
| 2517 | smi->io.regshift, |
| 2518 | smi->irq, |
| 2519 | smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2520 | } |
| 2521 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2522 | /* |
| 2523 | * oem_data_avail_to_receive_msg_avail |
| 2524 | * @info - smi_info structure with msg_flags set |
| 2525 | * |
| 2526 | * Converts flags from OEM_DATA_AVAIL to RECEIVE_MSG_AVAIL |
| 2527 | * Returns 1 indicating need to re-run handle_flags(). |
| 2528 | */ |
| 2529 | static int oem_data_avail_to_receive_msg_avail(struct smi_info *smi_info) |
| 2530 | { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 2531 | smi_info->msg_flags = ((smi_info->msg_flags & ~OEM_DATA_AVAIL) | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2532 | RECEIVE_MSG_AVAIL); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2533 | return 1; |
| 2534 | } |
| 2535 | |
| 2536 | /* |
| 2537 | * setup_dell_poweredge_oem_data_handler |
| 2538 | * @info - smi_info.device_id must be populated |
| 2539 | * |
| 2540 | * Systems that match, but have firmware version < 1.40 may assert |
| 2541 | * OEM0_DATA_AVAIL on their own, without being told via Set Flags that |
| 2542 | * it's safe to do so. Such systems will de-assert OEM1_DATA_AVAIL |
| 2543 | * upon receipt of IPMI_GET_MSG_CMD, so we should treat these flags |
| 2544 | * as RECEIVE_MSG_AVAIL instead. |
| 2545 | * |
| 2546 | * As Dell has no plans to release IPMI 1.5 firmware that *ever* |
| 2547 | * assert the OEM[012] bits, and if it did, the driver would have to |
| 2548 | * change to handle that properly, we don't actually check for the |
| 2549 | * firmware version. |
| 2550 | * Device ID = 0x20 BMC on PowerEdge 8G servers |
| 2551 | * Device Revision = 0x80 |
| 2552 | * Firmware Revision1 = 0x01 BMC version 1.40 |
| 2553 | * Firmware Revision2 = 0x40 BCD encoded |
| 2554 | * IPMI Version = 0x51 IPMI 1.5 |
| 2555 | * Manufacturer ID = A2 02 00 Dell IANA |
| 2556 | * |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2557 | * Additionally, PowerEdge systems with IPMI < 1.5 may also assert |
| 2558 | * OEM0_DATA_AVAIL and needs to be treated as RECEIVE_MSG_AVAIL. |
| 2559 | * |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2560 | */ |
| 2561 | #define DELL_POWEREDGE_8G_BMC_DEVICE_ID 0x20 |
| 2562 | #define DELL_POWEREDGE_8G_BMC_DEVICE_REV 0x80 |
| 2563 | #define DELL_POWEREDGE_8G_BMC_IPMI_VERSION 0x51 |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2564 | #define DELL_IANA_MFR_ID 0x0002a2 |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2565 | static void setup_dell_poweredge_oem_data_handler(struct smi_info *smi_info) |
| 2566 | { |
| 2567 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2568 | if (id->manufacturer_id == DELL_IANA_MFR_ID) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2569 | if (id->device_id == DELL_POWEREDGE_8G_BMC_DEVICE_ID && |
| 2570 | id->device_revision == DELL_POWEREDGE_8G_BMC_DEVICE_REV && |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2571 | id->ipmi_version == DELL_POWEREDGE_8G_BMC_IPMI_VERSION) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2572 | smi_info->oem_data_avail_handler = |
| 2573 | oem_data_avail_to_receive_msg_avail; |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2574 | } else if (ipmi_version_major(id) < 1 || |
| 2575 | (ipmi_version_major(id) == 1 && |
| 2576 | ipmi_version_minor(id) < 5)) { |
Corey Minyard | d5a2b89 | 2005-11-07 00:59:58 -0800 | [diff] [blame] | 2577 | smi_info->oem_data_avail_handler = |
| 2578 | oem_data_avail_to_receive_msg_avail; |
| 2579 | } |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2580 | } |
| 2581 | } |
| 2582 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2583 | #define CANNOT_RETURN_REQUESTED_LENGTH 0xCA |
| 2584 | static void return_hosed_msg_badsize(struct smi_info *smi_info) |
| 2585 | { |
| 2586 | struct ipmi_smi_msg *msg = smi_info->curr_msg; |
| 2587 | |
| 2588 | /* Make it a reponse */ |
| 2589 | msg->rsp[0] = msg->data[0] | 4; |
| 2590 | msg->rsp[1] = msg->data[1]; |
| 2591 | msg->rsp[2] = CANNOT_RETURN_REQUESTED_LENGTH; |
| 2592 | msg->rsp_size = 3; |
| 2593 | smi_info->curr_msg = NULL; |
| 2594 | deliver_recv_msg(smi_info, msg); |
| 2595 | } |
| 2596 | |
| 2597 | /* |
| 2598 | * dell_poweredge_bt_xaction_handler |
| 2599 | * @info - smi_info.device_id must be populated |
| 2600 | * |
| 2601 | * Dell PowerEdge servers with the BT interface (x6xx and 1750) will |
| 2602 | * not respond to a Get SDR command if the length of the data |
| 2603 | * requested is exactly 0x3A, which leads to command timeouts and no |
| 2604 | * data returned. This intercepts such commands, and causes userspace |
| 2605 | * callers to try again with a different-sized buffer, which succeeds. |
| 2606 | */ |
| 2607 | |
| 2608 | #define STORAGE_NETFN 0x0A |
| 2609 | #define STORAGE_CMD_GET_SDR 0x23 |
| 2610 | static int dell_poweredge_bt_xaction_handler(struct notifier_block *self, |
| 2611 | unsigned long unused, |
| 2612 | void *in) |
| 2613 | { |
| 2614 | struct smi_info *smi_info = in; |
| 2615 | unsigned char *data = smi_info->curr_msg->data; |
| 2616 | unsigned int size = smi_info->curr_msg->data_size; |
| 2617 | if (size >= 8 && |
| 2618 | (data[0]>>2) == STORAGE_NETFN && |
| 2619 | data[1] == STORAGE_CMD_GET_SDR && |
| 2620 | data[7] == 0x3A) { |
| 2621 | return_hosed_msg_badsize(smi_info); |
| 2622 | return NOTIFY_STOP; |
| 2623 | } |
| 2624 | return NOTIFY_DONE; |
| 2625 | } |
| 2626 | |
| 2627 | static struct notifier_block dell_poweredge_bt_xaction_notifier = { |
| 2628 | .notifier_call = dell_poweredge_bt_xaction_handler, |
| 2629 | }; |
| 2630 | |
| 2631 | /* |
| 2632 | * setup_dell_poweredge_bt_xaction_handler |
| 2633 | * @info - smi_info.device_id must be filled in already |
| 2634 | * |
| 2635 | * Fills in smi_info.device_id.start_transaction_pre_hook |
| 2636 | * when we know what function to use there. |
| 2637 | */ |
| 2638 | static void |
| 2639 | setup_dell_poweredge_bt_xaction_handler(struct smi_info *smi_info) |
| 2640 | { |
| 2641 | struct ipmi_device_id *id = &smi_info->device_id; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2642 | if (id->manufacturer_id == DELL_IANA_MFR_ID && |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2643 | smi_info->si_type == SI_BT) |
| 2644 | register_xaction_notifier(&dell_poweredge_bt_xaction_notifier); |
| 2645 | } |
| 2646 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2647 | /* |
| 2648 | * setup_oem_data_handler |
| 2649 | * @info - smi_info.device_id must be filled in already |
| 2650 | * |
| 2651 | * Fills in smi_info.device_id.oem_data_available_handler |
| 2652 | * when we know what function to use there. |
| 2653 | */ |
| 2654 | |
| 2655 | static void setup_oem_data_handler(struct smi_info *smi_info) |
| 2656 | { |
| 2657 | setup_dell_poweredge_oem_data_handler(smi_info); |
| 2658 | } |
| 2659 | |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2660 | static void setup_xaction_handlers(struct smi_info *smi_info) |
| 2661 | { |
| 2662 | setup_dell_poweredge_bt_xaction_handler(smi_info); |
| 2663 | } |
| 2664 | |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2665 | static inline void wait_for_timer_and_thread(struct smi_info *smi_info) |
| 2666 | { |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2667 | if (smi_info->intf) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2668 | /* |
| 2669 | * The timer and thread are only running if the |
| 2670 | * interface has been started up and registered. |
| 2671 | */ |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2672 | if (smi_info->thread != NULL) |
| 2673 | kthread_stop(smi_info->thread); |
| 2674 | del_timer_sync(&smi_info->si_timer); |
| 2675 | } |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2676 | } |
| 2677 | |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2678 | static __devinitdata struct ipmi_default_vals |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2679 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2680 | int type; |
| 2681 | int port; |
Randy Dunlap | 7420884 | 2006-04-18 22:21:52 -0700 | [diff] [blame] | 2682 | } ipmi_defaults[] = |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2683 | { |
| 2684 | { .type = SI_KCS, .port = 0xca2 }, |
| 2685 | { .type = SI_SMIC, .port = 0xca9 }, |
| 2686 | { .type = SI_BT, .port = 0xe4 }, |
| 2687 | { .port = 0 } |
| 2688 | }; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2689 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2690 | static __devinit void default_find_bmc(void) |
| 2691 | { |
| 2692 | struct smi_info *info; |
| 2693 | int i; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2694 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2695 | for (i = 0; ; i++) { |
| 2696 | if (!ipmi_defaults[i].port) |
| 2697 | break; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2698 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2699 | info = kzalloc(sizeof(*info), GFP_KERNEL); |
| 2700 | if (!info) |
| 2701 | return; |
| 2702 | |
Christian Krafft | 4ff31d7 | 2007-03-05 00:30:48 -0800 | [diff] [blame] | 2703 | #ifdef CONFIG_PPC_MERGE |
| 2704 | if (check_legacy_ioport(ipmi_defaults[i].port)) |
| 2705 | continue; |
| 2706 | #endif |
| 2707 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2708 | info->addr_source = NULL; |
| 2709 | |
| 2710 | info->si_type = ipmi_defaults[i].type; |
| 2711 | info->io_setup = port_setup; |
| 2712 | info->io.addr_data = ipmi_defaults[i].port; |
| 2713 | info->io.addr_type = IPMI_IO_ADDR_SPACE; |
| 2714 | |
| 2715 | info->io.addr = NULL; |
| 2716 | info->io.regspacing = DEFAULT_REGSPACING; |
| 2717 | info->io.regsize = DEFAULT_REGSPACING; |
| 2718 | info->io.regshift = 0; |
| 2719 | |
| 2720 | if (try_smi_init(info) == 0) { |
| 2721 | /* Found one... */ |
| 2722 | printk(KERN_INFO "ipmi_si: Found default %s state" |
| 2723 | " machine at %s address 0x%lx\n", |
| 2724 | si_to_str[info->si_type], |
| 2725 | addr_space_to_str[info->io.addr_type], |
| 2726 | info->io.addr_data); |
| 2727 | return; |
| 2728 | } |
| 2729 | } |
| 2730 | } |
| 2731 | |
| 2732 | static int is_new_interface(struct smi_info *info) |
| 2733 | { |
| 2734 | struct smi_info *e; |
| 2735 | |
| 2736 | list_for_each_entry(e, &smi_infos, link) { |
| 2737 | if (e->io.addr_type != info->io.addr_type) |
| 2738 | continue; |
| 2739 | if (e->io.addr_data == info->io.addr_data) |
| 2740 | return 0; |
| 2741 | } |
| 2742 | |
| 2743 | return 1; |
| 2744 | } |
| 2745 | |
| 2746 | static int try_smi_init(struct smi_info *new_smi) |
| 2747 | { |
| 2748 | int rv; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2749 | int i; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2750 | |
| 2751 | if (new_smi->addr_source) { |
| 2752 | printk(KERN_INFO "ipmi_si: Trying %s-specified %s state" |
| 2753 | " machine at %s address 0x%lx, slave address 0x%x," |
| 2754 | " irq %d\n", |
| 2755 | new_smi->addr_source, |
| 2756 | si_to_str[new_smi->si_type], |
| 2757 | addr_space_to_str[new_smi->io.addr_type], |
| 2758 | new_smi->io.addr_data, |
| 2759 | new_smi->slave_addr, new_smi->irq); |
| 2760 | } |
| 2761 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2762 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2763 | if (!is_new_interface(new_smi)) { |
| 2764 | printk(KERN_WARNING "ipmi_si: duplicate interface\n"); |
| 2765 | rv = -EBUSY; |
| 2766 | goto out_err; |
| 2767 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2768 | |
| 2769 | /* So we know not to free it unless we have allocated one. */ |
| 2770 | new_smi->intf = NULL; |
| 2771 | new_smi->si_sm = NULL; |
| 2772 | new_smi->handlers = NULL; |
| 2773 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2774 | switch (new_smi->si_type) { |
| 2775 | case SI_KCS: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2776 | new_smi->handlers = &kcs_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2777 | break; |
| 2778 | |
| 2779 | case SI_SMIC: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2780 | new_smi->handlers = &smic_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2781 | break; |
| 2782 | |
| 2783 | case SI_BT: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2784 | new_smi->handlers = &bt_smi_handlers; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2785 | break; |
| 2786 | |
| 2787 | default: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2788 | /* No support for anything else yet. */ |
| 2789 | rv = -EIO; |
| 2790 | goto out_err; |
| 2791 | } |
| 2792 | |
| 2793 | /* Allocate the state machine's data and initialize it. */ |
| 2794 | new_smi->si_sm = kmalloc(new_smi->handlers->size(), GFP_KERNEL); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2795 | if (!new_smi->si_sm) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2796 | printk(KERN_ERR "Could not allocate state machine memory\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2797 | rv = -ENOMEM; |
| 2798 | goto out_err; |
| 2799 | } |
| 2800 | new_smi->io_size = new_smi->handlers->init_data(new_smi->si_sm, |
| 2801 | &new_smi->io); |
| 2802 | |
| 2803 | /* Now that we know the I/O size, we can set up the I/O. */ |
| 2804 | rv = new_smi->io_setup(new_smi); |
| 2805 | if (rv) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2806 | printk(KERN_ERR "Could not set up I/O space\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2807 | goto out_err; |
| 2808 | } |
| 2809 | |
| 2810 | spin_lock_init(&(new_smi->si_lock)); |
| 2811 | spin_lock_init(&(new_smi->msg_lock)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2812 | |
| 2813 | /* Do low-level detection first. */ |
| 2814 | if (new_smi->handlers->detect(new_smi->si_sm)) { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2815 | if (new_smi->addr_source) |
| 2816 | printk(KERN_INFO "ipmi_si: Interface detection" |
| 2817 | " failed\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2818 | rv = -ENODEV; |
| 2819 | goto out_err; |
| 2820 | } |
| 2821 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2822 | /* |
| 2823 | * Attempt a get device id command. If it fails, we probably |
| 2824 | * don't have a BMC here. |
| 2825 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2826 | rv = try_get_dev_id(new_smi); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2827 | if (rv) { |
| 2828 | if (new_smi->addr_source) |
| 2829 | printk(KERN_INFO "ipmi_si: There appears to be no BMC" |
| 2830 | " at this location\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2831 | goto out_err; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2832 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2833 | |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2834 | setup_oem_data_handler(new_smi); |
Corey Minyard | ea94027 | 2005-11-07 00:59:59 -0800 | [diff] [blame] | 2835 | setup_xaction_handlers(new_smi); |
Corey Minyard | 3ae0e0f | 2005-09-06 15:18:41 -0700 | [diff] [blame] | 2836 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2837 | INIT_LIST_HEAD(&(new_smi->xmit_msgs)); |
| 2838 | INIT_LIST_HEAD(&(new_smi->hp_xmit_msgs)); |
| 2839 | new_smi->curr_msg = NULL; |
| 2840 | atomic_set(&new_smi->req_events, 0); |
| 2841 | new_smi->run_to_completion = 0; |
Corey Minyard | 64959e2 | 2008-04-29 01:01:07 -0700 | [diff] [blame] | 2842 | for (i = 0; i < SI_NUM_STATS; i++) |
| 2843 | atomic_set(&new_smi->stats[i], 0); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2844 | |
| 2845 | new_smi->interrupt_disabled = 0; |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2846 | atomic_set(&new_smi->stop_operation, 0); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2847 | new_smi->intf_num = smi_num; |
| 2848 | smi_num++; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2849 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2850 | /* |
| 2851 | * Start clearing the flags before we enable interrupts or the |
| 2852 | * timer to avoid racing with the timer. |
| 2853 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2854 | start_clear_flags(new_smi); |
| 2855 | /* IRQ is defined to be set when non-zero. */ |
| 2856 | if (new_smi->irq) |
| 2857 | new_smi->si_state = SI_CLEARING_FLAGS_THEN_SET_IRQ; |
| 2858 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2859 | if (!new_smi->dev) { |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2860 | /* |
| 2861 | * If we don't already have a device from something |
| 2862 | * else (like PCI), then register a new one. |
| 2863 | */ |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2864 | new_smi->pdev = platform_device_alloc("ipmi_si", |
| 2865 | new_smi->intf_num); |
| 2866 | if (rv) { |
| 2867 | printk(KERN_ERR |
| 2868 | "ipmi_si_intf:" |
| 2869 | " Unable to allocate platform device\n"); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2870 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2871 | } |
| 2872 | new_smi->dev = &new_smi->pdev->dev; |
| 2873 | new_smi->dev->driver = &ipmi_driver; |
| 2874 | |
Zhang, Yanmin | b48f545 | 2006-11-16 01:19:08 -0800 | [diff] [blame] | 2875 | rv = platform_device_add(new_smi->pdev); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2876 | if (rv) { |
| 2877 | printk(KERN_ERR |
| 2878 | "ipmi_si_intf:" |
| 2879 | " Unable to register system interface device:" |
| 2880 | " %d\n", |
| 2881 | rv); |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2882 | goto out_err; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2883 | } |
| 2884 | new_smi->dev_registered = 1; |
| 2885 | } |
| 2886 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2887 | rv = ipmi_register_smi(&handlers, |
| 2888 | new_smi, |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2889 | &new_smi->device_id, |
| 2890 | new_smi->dev, |
Corey Minyard | 759643b | 2006-12-06 20:40:59 -0800 | [diff] [blame] | 2891 | "bmc", |
Corey Minyard | 453823b | 2006-03-31 02:30:39 -0800 | [diff] [blame] | 2892 | new_smi->slave_addr); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2893 | if (rv) { |
| 2894 | printk(KERN_ERR |
| 2895 | "ipmi_si: Unable to register device: error %d\n", |
| 2896 | rv); |
| 2897 | goto out_err_stop_timer; |
| 2898 | } |
| 2899 | |
| 2900 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "type", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 2901 | type_file_read_proc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2902 | new_smi, THIS_MODULE); |
| 2903 | if (rv) { |
| 2904 | printk(KERN_ERR |
| 2905 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2906 | rv); |
| 2907 | goto out_err_stop_timer; |
| 2908 | } |
| 2909 | |
| 2910 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "si_stats", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 2911 | stat_file_read_proc, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2912 | new_smi, THIS_MODULE); |
| 2913 | if (rv) { |
| 2914 | printk(KERN_ERR |
| 2915 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2916 | rv); |
| 2917 | goto out_err_stop_timer; |
| 2918 | } |
| 2919 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2920 | rv = ipmi_smi_add_proc_entry(new_smi->intf, "params", |
Alexey Dobriyan | fa68be0 | 2008-04-29 01:01:13 -0700 | [diff] [blame] | 2921 | param_read_proc, |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 2922 | new_smi, THIS_MODULE); |
| 2923 | if (rv) { |
| 2924 | printk(KERN_ERR |
| 2925 | "ipmi_si: Unable to create proc entry: %d\n", |
| 2926 | rv); |
| 2927 | goto out_err_stop_timer; |
| 2928 | } |
| 2929 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2930 | list_add_tail(&new_smi->link, &smi_infos); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2931 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2932 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2933 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2934 | printk(KERN_INFO "IPMI %s interface initialized\n", |
| 2935 | si_to_str[new_smi->si_type]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2936 | |
| 2937 | return 0; |
| 2938 | |
| 2939 | out_err_stop_timer: |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 2940 | atomic_inc(&new_smi->stop_operation); |
| 2941 | wait_for_timer_and_thread(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2942 | |
| 2943 | out_err: |
| 2944 | if (new_smi->intf) |
| 2945 | ipmi_unregister_smi(new_smi->intf); |
| 2946 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2947 | if (new_smi->irq_cleanup) |
| 2948 | new_smi->irq_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2949 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 2950 | /* |
| 2951 | * Wait until we know that we are out of any interrupt |
| 2952 | * handlers might have been running before we freed the |
| 2953 | * interrupt. |
| 2954 | */ |
Paul E. McKenney | fbd568a3e | 2005-05-01 08:59:04 -0700 | [diff] [blame] | 2955 | synchronize_sched(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2956 | |
| 2957 | if (new_smi->si_sm) { |
| 2958 | if (new_smi->handlers) |
| 2959 | new_smi->handlers->cleanup(new_smi->si_sm); |
| 2960 | kfree(new_smi->si_sm); |
| 2961 | } |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2962 | if (new_smi->addr_source_cleanup) |
| 2963 | new_smi->addr_source_cleanup(new_smi); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 2964 | if (new_smi->io_cleanup) |
| 2965 | new_smi->io_cleanup(new_smi); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2966 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2967 | if (new_smi->dev_registered) |
| 2968 | platform_device_unregister(new_smi->pdev); |
| 2969 | |
| 2970 | kfree(new_smi); |
| 2971 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 2972 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2973 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2974 | return rv; |
| 2975 | } |
| 2976 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 2977 | static __devinit int init_ipmi_si(void) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2978 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2979 | int i; |
| 2980 | char *str; |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2981 | int rv; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2982 | |
| 2983 | if (initialized) |
| 2984 | return 0; |
| 2985 | initialized = 1; |
| 2986 | |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 2987 | /* Register the device drivers. */ |
| 2988 | rv = driver_register(&ipmi_driver); |
| 2989 | if (rv) { |
| 2990 | printk(KERN_ERR |
| 2991 | "init_ipmi_si: Unable to register driver: %d\n", |
| 2992 | rv); |
| 2993 | return rv; |
| 2994 | } |
| 2995 | |
| 2996 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2997 | /* Parse out the si_type string into its components. */ |
| 2998 | str = si_type_str; |
| 2999 | if (*str != '\0') { |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3000 | for (i = 0; (i < SI_MAX_PARMS) && (*str != '\0'); i++) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3001 | si_type[i] = str; |
| 3002 | str = strchr(str, ','); |
| 3003 | if (str) { |
| 3004 | *str = '\0'; |
| 3005 | str++; |
| 3006 | } else { |
| 3007 | break; |
| 3008 | } |
| 3009 | } |
| 3010 | } |
| 3011 | |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3012 | printk(KERN_INFO "IPMI System Interface driver.\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3013 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3014 | hardcode_find_bmc(); |
| 3015 | |
Matt Domsch | a9fad4c | 2006-01-11 12:17:44 -0800 | [diff] [blame] | 3016 | #ifdef CONFIG_DMI |
Andrey Panin | b224cd3 | 2005-09-06 15:18:37 -0700 | [diff] [blame] | 3017 | dmi_find_bmc(); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3018 | #endif |
| 3019 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3020 | #ifdef CONFIG_ACPI |
Corey Minyard | 1d5636c | 2006-12-10 02:19:08 -0800 | [diff] [blame] | 3021 | acpi_find_bmc(); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3022 | #endif |
| 3023 | |
| 3024 | #ifdef CONFIG_PCI |
Corey Minyard | 168b35a | 2006-12-06 20:41:11 -0800 | [diff] [blame] | 3025 | rv = pci_register_driver(&ipmi_pci_driver); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3026 | if (rv) |
Corey Minyard | 168b35a | 2006-12-06 20:41:11 -0800 | [diff] [blame] | 3027 | printk(KERN_ERR |
| 3028 | "init_ipmi_si: Unable to register PCI driver: %d\n", |
| 3029 | rv); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3030 | #endif |
| 3031 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 3032 | #ifdef CONFIG_PPC_OF |
| 3033 | of_register_platform_driver(&ipmi_of_platform_driver); |
| 3034 | #endif |
| 3035 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3036 | if (si_trydefaults) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3037 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3038 | if (list_empty(&smi_infos)) { |
| 3039 | /* No BMC was found, try defaults. */ |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3040 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3041 | default_find_bmc(); |
| 3042 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3043 | mutex_unlock(&smi_infos_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3044 | } |
| 3045 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3046 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3047 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3048 | if (unload_when_empty && list_empty(&smi_infos)) { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3049 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3050 | #ifdef CONFIG_PCI |
| 3051 | pci_unregister_driver(&ipmi_pci_driver); |
| 3052 | #endif |
Christian Krafft | 10fb62e | 2007-05-12 10:37:01 -0700 | [diff] [blame] | 3053 | |
| 3054 | #ifdef CONFIG_PPC_OF |
| 3055 | of_unregister_platform_driver(&ipmi_of_platform_driver); |
| 3056 | #endif |
Arnaud Patard | 55ebcc3 | 2006-09-16 12:15:36 -0700 | [diff] [blame] | 3057 | driver_unregister(&ipmi_driver); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3058 | printk(KERN_WARNING |
| 3059 | "ipmi_si: Unable to find any System Interface(s)\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3060 | return -ENODEV; |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3061 | } else { |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3062 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3063 | return 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3064 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3065 | } |
| 3066 | module_init(init_ipmi_si); |
| 3067 | |
Corey Minyard | b361e27 | 2006-12-06 20:41:07 -0800 | [diff] [blame] | 3068 | static void cleanup_one_si(struct smi_info *to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3069 | { |
| 3070 | int rv; |
| 3071 | unsigned long flags; |
| 3072 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3073 | if (!to_clean) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3074 | return; |
| 3075 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3076 | list_del(&to_clean->link); |
| 3077 | |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3078 | /* Tell the driver that we are shutting down. */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3079 | atomic_inc(&to_clean->stop_operation); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3080 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3081 | /* |
| 3082 | * Make sure the timer and thread are stopped and will not run |
| 3083 | * again. |
| 3084 | */ |
Corey Minyard | a9a2c44 | 2005-11-07 01:00:03 -0800 | [diff] [blame] | 3085 | wait_for_timer_and_thread(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3086 | |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3087 | /* |
| 3088 | * Timeouts are stopped, now make sure the interrupts are off |
| 3089 | * for the device. A little tricky with locks to make sure |
| 3090 | * there are no races. |
| 3091 | */ |
Corey Minyard | ee6cd5f | 2007-05-08 00:23:54 -0700 | [diff] [blame] | 3092 | spin_lock_irqsave(&to_clean->si_lock, flags); |
| 3093 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3094 | spin_unlock_irqrestore(&to_clean->si_lock, flags); |
| 3095 | poll(to_clean); |
| 3096 | schedule_timeout_uninterruptible(1); |
| 3097 | spin_lock_irqsave(&to_clean->si_lock, flags); |
| 3098 | } |
| 3099 | disable_si_irq(to_clean); |
| 3100 | spin_unlock_irqrestore(&to_clean->si_lock, flags); |
| 3101 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
| 3102 | poll(to_clean); |
| 3103 | schedule_timeout_uninterruptible(1); |
| 3104 | } |
| 3105 | |
| 3106 | /* Clean up interrupts and make sure that everything is done. */ |
| 3107 | if (to_clean->irq_cleanup) |
| 3108 | to_clean->irq_cleanup(to_clean); |
Corey Minyard | e8b3361 | 2005-09-06 15:18:45 -0700 | [diff] [blame] | 3109 | while (to_clean->curr_msg || (to_clean->si_state != SI_NORMAL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3110 | poll(to_clean); |
Nishanth Aravamudan | da4cd8d | 2005-09-10 00:27:30 -0700 | [diff] [blame] | 3111 | schedule_timeout_uninterruptible(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3112 | } |
| 3113 | |
| 3114 | rv = ipmi_unregister_smi(to_clean->intf); |
| 3115 | if (rv) { |
| 3116 | printk(KERN_ERR |
| 3117 | "ipmi_si: Unable to unregister device: errno=%d\n", |
| 3118 | rv); |
| 3119 | } |
| 3120 | |
| 3121 | to_clean->handlers->cleanup(to_clean->si_sm); |
| 3122 | |
| 3123 | kfree(to_clean->si_sm); |
| 3124 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3125 | if (to_clean->addr_source_cleanup) |
| 3126 | to_clean->addr_source_cleanup(to_clean); |
Paolo Galtieri | 7767e12 | 2005-12-15 12:34:28 -0800 | [diff] [blame] | 3127 | if (to_clean->io_cleanup) |
| 3128 | to_clean->io_cleanup(to_clean); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3129 | |
| 3130 | if (to_clean->dev_registered) |
| 3131 | platform_device_unregister(to_clean->pdev); |
| 3132 | |
| 3133 | kfree(to_clean); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3134 | } |
| 3135 | |
| 3136 | static __exit void cleanup_ipmi_si(void) |
| 3137 | { |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3138 | struct smi_info *e, *tmp_e; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3139 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3140 | if (!initialized) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3141 | return; |
| 3142 | |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3143 | #ifdef CONFIG_PCI |
| 3144 | pci_unregister_driver(&ipmi_pci_driver); |
| 3145 | #endif |
| 3146 | |
Corey Minyard | dba9b4f | 2007-05-08 00:23:51 -0700 | [diff] [blame] | 3147 | #ifdef CONFIG_PPC_OF |
| 3148 | of_unregister_platform_driver(&ipmi_of_platform_driver); |
| 3149 | #endif |
| 3150 | |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3151 | mutex_lock(&smi_infos_lock); |
Corey Minyard | b0defcd | 2006-03-26 01:37:20 -0800 | [diff] [blame] | 3152 | list_for_each_entry_safe(e, tmp_e, &smi_infos, link) |
| 3153 | cleanup_one_si(e); |
Corey Minyard | d6dfd13 | 2006-03-31 02:30:41 -0800 | [diff] [blame] | 3154 | mutex_unlock(&smi_infos_lock); |
Corey Minyard | 50c812b | 2006-03-26 01:37:21 -0800 | [diff] [blame] | 3155 | |
| 3156 | driver_unregister(&ipmi_driver); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3157 | } |
| 3158 | module_exit(cleanup_ipmi_si); |
| 3159 | |
| 3160 | MODULE_LICENSE("GPL"); |
Corey Minyard | 1fdd75b | 2005-09-06 15:18:42 -0700 | [diff] [blame] | 3161 | MODULE_AUTHOR("Corey Minyard <minyard@mvista.com>"); |
Corey Minyard | c305e3d | 2008-04-29 01:01:10 -0700 | [diff] [blame] | 3162 | MODULE_DESCRIPTION("Interface to the IPMI driver for the KCS, SMIC, and BT" |
| 3163 | " system interfaces."); |